Release v0.33.5

Docs: changelog entry for #4191
TypeScript: chromaSubsampling can be undefined (#4191 )
2026-02-04 21:56:18 +01:00 · 2024-08-16 13:29:19 +01:00 · 2024-08-14 16:03:08 +01:00 · 2024-08-14 12:59:10 +01:00 · 2024-08-14 08:49:14 +01:00 · 2024-08-14 08:48:12 +01:00
68 changed files with 902 additions and 396 deletions
--- a/.github/ISSUE_TEMPLATE/installation.md
+++ b/.github/ISSUE_TEMPLATE/installation.md
@@ -43,7 +43,7 @@ and try again before opening an issue.

 <!-- Please place an [x] in the relevant box to confirm. -->

- [ ] I am using npm >= 9.6.5 with `--include=optional`
+- [ ] I am using npm >= 10.1.0 with `--include=optional`
 - [ ] I am using yarn >= 3.2.0
 - [ ] I am using pnpm >= 7.1.0 with `--no-optional=false`
 - [ ] I am using Deno
--- a/.github/ISSUE_TEMPLATE/possible-bug.md
+++ b/.github/ISSUE_TEMPLATE/possible-bug.md
@@ -32,6 +32,22 @@ If you are using another package which depends on a version of `sharp` that is n

 <!-- Please provide output of the above command here. -->

+### Does this problem relate to file caching?
+
+The default behaviour of libvips is to cache input files, which can lead to `EBUSY` or `EPERM` errors on Windows.
+Use [`sharp.cache(false)`](https://sharp.pixelplumbing.com/api-utility#cache) to switch this feature off.
+
+- [ ] Adding `sharp.cache(false)` does not fix this problem.
+
+### Does this problem relate to images appearing to have been rotated by 90 degrees?
+
+Images that contain EXIF Orientation metadata are not auto-oriented. By default, EXIF metadata is removed.
+
+- To auto-orient pixel values use the parameter-less [`rotate()`](https://sharp.pixelplumbing.com/api-operation#rotate) operation.
+- To retain EXIF Orientation use [`keepExif()`](https://sharp.pixelplumbing.com/api-output#keepexif).
+
+- [ ] Using `rotate()` or `keepExif()` does not fix this problem.
+
 ### What are the steps to reproduce?

 <!-- Please enter steps to reproduce here. -->
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -36,13 +36,13 @@ jobs:
            container: node:20-alpine3.18
            nodejs_version_major: 20
            platform: linuxmusl-x64
-          - os: macos-11
+          - os: macos-12
            nodejs_arch: x64
            nodejs_version: "^18.17.0"
            nodejs_version_major: 18
            platform: darwin-x64
            prebuild: true
-          - os: macos-11
+          - os: macos-12
            nodejs_arch: x64
            nodejs_version: "^20.3.0"
            nodejs_version_major: 20
@@ -84,7 +84,7 @@ jobs:
      - name: Dependencies (Rocky Linux glibc)
        if: contains(matrix.container, 'rockylinux')
        run: |
-          dnf install -y gcc-toolset-11-gcc-c++ make git python3 fontconfig google-noto-sans-fonts
+          dnf install -y gcc-toolset-11-gcc-c++ make git python3.12 fontconfig google-noto-sans-fonts
          echo "/opt/rh/gcc-toolset-11/root/usr/bin" >> $GITHUB_PATH
      - name: Dependencies (Linux musl)
        if: contains(matrix.container, 'alpine')
@@ -131,12 +131,14 @@ jobs:
      matrix:
        include:
          - platform: linux-arm
+            distro: bullseye
            run_on_arch: armv6
            nodejs_arch: armv6l
            nodejs_hostname: unofficial-builds.nodejs.org
            nodejs_version: "18.17.0"
            nodejs_version_major: 18
          - platform: linux-s390x
+            distro: bullseye
            run_on_arch: s390x
            nodejs_arch: s390x
            nodejs_hostname: nodejs.org
@@ -147,7 +149,7 @@ jobs:
      - uses: uraimo/run-on-arch-action@v2
        with:
          arch: ${{ matrix.run_on_arch }}
-          distro: buster
+          distro: ${{ matrix.distro }}
          env: |
            prebuild_upload: "${{ startsWith(github.ref, 'refs/tags/') && secrets.GITHUB_TOKEN || '' }}"
          run: |
@@ -169,7 +171,7 @@ jobs:
      contents: write
    name: wasm32 - prebuild
    runs-on: ubuntu-22.04
-    container: "emscripten/emsdk:3.1.56"
+    container: "emscripten/emsdk:3.1.64"
    steps:
      - name: Checkout
        uses: actions/checkout@v4
--- a/.github/workflows/npm.yml
+++ b/.github/workflows/npm.yml
@@ -31,6 +31,10 @@ jobs:
            runs-on: ubuntu-22.04
            runtime: node
            package-manager: yarn-pnp
+          - name: linux-x64-node-yarn-v1
+            runs-on: ubuntu-22.04
+            runtime: node
+            package-manager: yarn-v1
          - name: linux-x64-deno
            runs-on: ubuntu-22.04
            runtime: deno
@@ -39,26 +43,30 @@ jobs:
            runtime: bun

          - name: darwin-x64-node-npm
-            runs-on: macos-11
+            runs-on: macos-12
            runtime: node
            package-manager: npm
          - name: darwin-x64-node-pnpm
-            runs-on: macos-11
+            runs-on: macos-12
            runtime: node
            package-manager: pnpm
          - name: darwin-x64-node-yarn
-            runs-on: macos-11
+            runs-on: macos-12
            runtime: node
            package-manager: yarn
          - name: darwin-x64-node-yarn-pnp
-            runs-on: macos-11
+            runs-on: macos-12
            runtime: node
            package-manager: yarn-pnp
+          - name: darwin-x64-node-yarn-v1
+            runs-on: macos-12
+            runtime: node
+            package-manager: yarn-v1
          - name: darwin-x64-deno
-            runs-on: macos-11
+            runs-on: macos-12
            runtime: deno
          - name: darwin-x64-bun
-            runs-on: macos-11
+            runs-on: macos-12
            runtime: bun

          - name: win32-x64-node-npm
@@ -77,6 +85,10 @@ jobs:
            runs-on: windows-2019
            runtime: node
            package-manager: yarn-pnp
+          - name: win32-x64-node-yarn-v1
+            runs-on: windows-2019
+            runtime: node
+            package-manager: yarn-v1
          - name: win32-x64-deno
            runs-on: windows-2019
            runtime: deno
@@ -89,7 +101,7 @@ jobs:
          node-version: 20
      - name: Install pnpm
        if: ${{ matrix.package-manager == 'pnpm' }}
-        uses: pnpm/action-setup@v2
+        uses: pnpm/action-setup@v4
        with:
          version: 8
      - name: Install Deno
@@ -99,18 +111,18 @@ jobs:
          deno-version: v1.x
      - name: Install Bun
        if: ${{ matrix.runtime == 'bun' }}
-        uses: oven-sh/setup-bun@v1
+        uses: oven-sh/setup-bun@v2
        with:
          bun-version: latest

      - name: Version
        id: version
-        uses: actions/github-script@v6
+        uses: actions/github-script@v7
        with:
          script: |
            core.setOutput('semver', context.ref.replace('refs/tags/v',''))
      - name: Create package.json
-        uses: DamianReeves/write-file-action@v1.2
+        uses: DamianReeves/write-file-action@v1.3
        with:
          path: package.json
          contents: |
@@ -121,7 +133,7 @@ jobs:
              "type": "module"
            }
      - name: Create release.mjs
-        uses: DamianReeves/write-file-action@v1.2
+        uses: DamianReeves/write-file-action@v1.3
        with:
          path: release.mjs
          contents: |
@@ -163,6 +175,14 @@ jobs:
          yarn install
          yarn node release.mjs

+      - name: Run with Node.js + yarn v1
+        if: ${{ matrix.package-manager == 'yarn-v1' }}
+        run: |
+          corepack enable
+          yarn set version classic
+          yarn install
+          node release.mjs
+
      - name: Run with Deno
        if: ${{ matrix.runtime == 'deno' }}
        run: deno run --allow-read --allow-ffi release.mjs
--- a/docs/api-colour.md
+++ b/docs/api-colour.md
@@ -66,8 +66,6 @@ The input image will be converted to the provided colourspace at the start of th
 All operations will use this colourspace before converting to the output colourspace,
 as defined by [toColourspace](#tocolourspace).

-This feature is experimental and has not yet been fully-tested with all operations.
-

 **Throws**:

--- a/docs/api-input.md
+++ b/docs/api-input.md
@@ -42,6 +42,7 @@ A `Promise` is returned when `callback` is not provided.
 - `xmp`: Buffer containing raw XMP data, if present
 - `tifftagPhotoshop`: Buffer containing raw TIFFTAG_PHOTOSHOP data, if present
 - `formatMagick`: String containing format for images loaded via *magick
+- `comments`: Array of keyword/text pairs representing PNG text blocks, if present.



--- a/docs/api-operation.md
+++ b/docs/api-operation.md
@@ -231,7 +231,7 @@ const output = await sharp(input).median(5).toBuffer();


 ## blur
-> blur([sigma]) ⇒ <code>Sharp</code>
+> blur([options]) ⇒ <code>Sharp</code>

 Blur the image.

@@ -245,9 +245,12 @@ When a `sigma` is provided, performs a slower, more accurate Gaussian blur.
 - <code>Error</code> Invalid parameters


-| Param | Type | Description |
-| --- | --- | --- |
-| [sigma] | <code>number</code> | a value between 0.3 and 1000 representing the sigma of the Gaussian mask, where `sigma = 1 + radius / 2`. |
+| Param | Type | Default | Description |
+| --- | --- | --- | --- |
+| [options] | <code>Object</code> \| <code>number</code> \| <code>Boolean</code> |  |  |
+| [options.sigma] | <code>number</code> |  | a value between 0.3 and 1000 representing the sigma of the Gaussian mask, where `sigma = 1 + radius / 2`. |
+| [options.precision] | <code>string</code> | <code>&quot;&#x27;integer&#x27;&quot;</code> | How accurate the operation should be, one of: integer, float, approximate. |
+| [options.minAmplitude] | <code>number</code> | <code>0.2</code> | A value between 0.001 and 1. A smaller value will generate a larger, more accurate mask. |

 **Example**  
 ```js
@@ -580,7 +583,7 @@ Recombine the image with the specified matrix.

 | Param | Type | Description |
 | --- | --- | --- |
-| inputMatrix | <code>Array.&lt;Array.&lt;number&gt;&gt;</code> | 3x3 Recombination matrix |
+| inputMatrix | <code>Array.&lt;Array.&lt;number&gt;&gt;</code> | 3x3 or 4x4 Recombination matrix |

 **Example**  
 ```js
--- a/docs/api-output.md
+++ b/docs/api-output.md
@@ -24,7 +24,7 @@ A `Promise` is returned when `callback` is not provided.
 | Param | Type | Description |
 | --- | --- | --- |
 | fileOut | <code>string</code> | the path to write the image data to. |
-| [callback] | <code>function</code> | called on completion with two arguments `(err, info)`. `info` contains the output image `format`, `size` (bytes), `width`, `height`, `channels` and `premultiplied` (indicating if premultiplication was used). When using a crop strategy also contains `cropOffsetLeft` and `cropOffsetTop`. When using the attention crop strategy also contains `attentionX` and `attentionY`, the focal point of the cropped region. May also contain `textAutofitDpi` (dpi the font was rendered at) if image was created from text. |
+| [callback] | <code>function</code> | called on completion with two arguments `(err, info)`. `info` contains the output image `format`, `size` (bytes), `width`, `height`, `channels` and `premultiplied` (indicating if premultiplication was used). When using a crop strategy also contains `cropOffsetLeft` and `cropOffsetTop`. When using the attention crop strategy also contains `attentionX` and `attentionY`, the focal point of the cropped region. Animated output will also contain `pageHeight` and `pages`. May also contain `textAutofitDpi` (dpi the font was rendered at) if image was created from text. |

 **Example**  
 ```js
@@ -59,6 +59,7 @@ See [withMetadata](#withmetadata) for control over this.
 - `info` contains the output image `format`, `size` (bytes), `width`, `height`,
 `channels` and `premultiplied` (indicating if premultiplication was used).
 When using a crop strategy also contains `cropOffsetLeft` and `cropOffsetTop`.
+Animated output will also contain `pageHeight` and `pages`.
 May also contain `textAutofitDpi` (dpi the font was rendered at) if image was created from text.

 A `Promise` is returned when `callback` is not provided.
--- a/docs/api-resize.md
+++ b/docs/api-resize.md
@@ -21,18 +21,22 @@ When using a **fit** of `cover` or `contain`, the default **position** is `centr

 Some of these values are based on the [object-position](https://developer.mozilla.org/en-US/docs/Web/CSS/object-position) CSS property.

-The experimental strategy-based approach resizes so one dimension is at its target length
+The strategy-based approach initially resizes so one dimension is at its target length
 then repeatedly ranks edge regions, discarding the edge with the lowest score based on the selected strategy.
 - `entropy`: focus on the region with the highest [Shannon entropy](https://en.wikipedia.org/wiki/Entropy_%28information_theory%29).
 - `attention`: focus on the region with the highest luminance frequency, colour saturation and presence of skin tones.

-Possible interpolation kernels are:
+Possible downsizing kernels are:
 - `nearest`: Use [nearest neighbour interpolation](http://en.wikipedia.org/wiki/Nearest-neighbor_interpolation).
+- `linear`: Use a [triangle filter](https://en.wikipedia.org/wiki/Triangular_function).
 - `cubic`: Use a [Catmull-Rom spline](https://en.wikipedia.org/wiki/Centripetal_Catmull%E2%80%93Rom_spline).
 - `mitchell`: Use a [Mitchell-Netravali spline](https://www.cs.utexas.edu/~fussell/courses/cs384g-fall2013/lectures/mitchell/Mitchell.pdf).
 - `lanczos2`: Use a [Lanczos kernel](https://en.wikipedia.org/wiki/Lanczos_resampling#Lanczos_kernel) with `a=2`.
 - `lanczos3`: Use a Lanczos kernel with `a=3` (the default).

+When upsampling, these kernels map to `nearest`, `linear` and `cubic` interpolators.
+Downsampling kernels without a matching upsampling interpolator map to `cubic`.
+
 Only one resize can occur per pipeline.
 Previous calls to `resize` in the same pipeline will be ignored.

@@ -52,7 +56,7 @@ Previous calls to `resize` in the same pipeline will be ignored.
 | [options.fit] | <code>String</code> | <code>&#x27;cover&#x27;</code> | How the image should be resized/cropped to fit the target dimension(s), one of `cover`, `contain`, `fill`, `inside` or `outside`. |
 | [options.position] | <code>String</code> | <code>&#x27;centre&#x27;</code> | A position, gravity or strategy to use when `fit` is `cover` or `contain`. |
 | [options.background] | <code>String</code> \| <code>Object</code> | <code>{r: 0, g: 0, b: 0, alpha: 1}</code> | background colour when `fit` is `contain`, parsed by the [color](https://www.npmjs.org/package/color) module, defaults to black without transparency. |
-| [options.kernel] | <code>String</code> | <code>&#x27;lanczos3&#x27;</code> | The kernel to use for image reduction. Use the `fastShrinkOnLoad` option to control kernel vs shrink-on-load. |
+| [options.kernel] | <code>String</code> | <code>&#x27;lanczos3&#x27;</code> | The kernel to use for image reduction and the inferred interpolator to use for upsampling. Use the `fastShrinkOnLoad` option to control kernel vs shrink-on-load. |
 | [options.withoutEnlargement] | <code>Boolean</code> | <code>false</code> | Do not scale up if the width *or* height are already less than the target dimensions, equivalent to GraphicsMagick's `>` geometry option. This may result in output dimensions smaller than the target dimensions. |
 | [options.withoutReduction] | <code>Boolean</code> | <code>false</code> | Do not scale down if the width *or* height are already greater than the target dimensions, equivalent to GraphicsMagick's `<` geometry option. This may still result in a crop to reach the target dimensions. |
 | [options.fastShrinkOnLoad] | <code>Boolean</code> | <code>true</code> | Take greater advantage of the JPEG and WebP shrink-on-load feature, which can lead to a slight moiré pattern or round-down of an auto-scaled dimension. |
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -2,9 +2,76 @@

 ## v0.33 - *gauge*

-Requires libvips v8.15.2
+Requires libvips v8.15.3

-### v0.33.3 - TBD
+### v0.33.5 - 16th August 2024
+
+* Upgrade to libvips v8.15.3 for upstream bug fixes.
+
+* Add `pageHeight` and `pages` to response of multi-page output.
+  [#3411](https://github.com/lovell/sharp/issues/3411)
+
+* Ensure option to force use of a globally-installed libvips works correctly.
+  [#4111](https://github.com/lovell/sharp/pull/4111)
+  [@project0](https://github.com/project0)
+
+* Minimise use of `engines` property to improve yarn v1 support.
+  [#4130](https://github.com/lovell/sharp/issues/4130)
+
+* Ensure `sharp.format.heif` includes only AVIF when using prebuilt binaries.
+  [#4132](https://github.com/lovell/sharp/issues/4132)
+
+* Add support to recomb operation for 4x4 matrices.
+  [#4147](https://github.com/lovell/sharp/pull/4147)
+  [@ton11797](https://github.com/ton11797)
+
+* Expose PNG text chunks as `comments` metadata.
+  [#4157](https://github.com/lovell/sharp/pull/4157)
+  [@nkeynes](https://github.com/nkeynes)
+
+* Expose optional `precision` and `minAmplitude` parameters of `blur` operation.
+  [#4168](https://github.com/lovell/sharp/pull/4168)
+  [#4172](https://github.com/lovell/sharp/pull/4172)
+  [@marcosc90](https://github.com/marcosc90)
+
+* Ensure `keepIccProfile` avoids colour transformation where possible.
+  [#4186](https://github.com/lovell/sharp/issues/4186)
+
+* TypeScript: `chromaSubsampling` metadata is optional.
+  [#4191](https://github.com/lovell/sharp/pull/4191)
+  [@DavidVaness](https://github.com/DavidVaness)
+
+### v0.33.4 - 16th May 2024
+
+* Remove experimental status from `pipelineColourspace`.
+
+* Reduce default concurrency when musl thread over-subscription detected.
+
+* TypeScript: add missing definitions for `OverlayOptions`.
+  [#4048](https://github.com/lovell/sharp/pull/4048)
+  [@ike-gg](https://github.com/ike-gg)
+
+* Install: add advanced option to force use of a globally-installed libvips.
+  [#4060](https://github.com/lovell/sharp/issues/4060)
+
+* Expose `bilinear` resizing kernel (and interpolator).
+  [#4061](https://github.com/lovell/sharp/issues/4061)
+
+* Ensure `extend` operation stays sequential for multi-page TIFF (regression in 0.32.0).
+  [#4069](https://github.com/lovell/sharp/issues/4069)
+
+* Tighten validation of constructor `text` integer properties.
+  [#4071](https://github.com/lovell/sharp/issues/4071)
+
+* Simplify internal StaySequential logic.
+  [#4074](https://github.com/lovell/sharp/pull/4074)
+  [@kleisauke](https://github.com/kleisauke)
+
+* Ensure negate operation occurs after profile conversion.
+  [#4096](https://github.com/lovell/sharp/pull/4096)
+  [@adriaanmeuris](https://github.com/adriaanmeuris)
+
+### v0.33.3 - 23rd March 2024

 * Upgrade to libvips v8.15.2 for upstream bug fixes.

--- a/docs/humans.txt
+++ b/docs/humans.txt
@@ -28,7 +28,7 @@ Name: Brandon Aaron
 GitHub: https://github.com/brandonaaron

 Name: Andreas Lind
-GitHub: https://github.com/papandreouGitHub:
+GitHub: https://github.com/papandreou

 Name: Maurus Cuelenaere
 GitHub: https://github.com/mcuelenaere
@@ -261,7 +261,7 @@ GitHub: https://github.com/brahima
 Name: Anton Marsden
 GitHub: https://github.com/antonmarsden

-Name:  Marcos Casagrande
+Name: Marcos Casagrande
 GitHub: https://github.com/marcosc90

 Name: Emanuel Jöbstl
@@ -290,3 +290,15 @@ GitHub: https://github.com/yolopunk

 Name: Mert Alev
 GitHub: https://github.com/mertalev
+
+Name: Adriaan Meuris
+GitHub: https://github.com/adriaanmeuris
+
+Name: Richard Hillmann
+GitHub: https://github.com/project0
+
+Name: Pongsatorn Manusopit
+GitHub: https://github.com/ton11797
+
+Name: Nathan Keynes
+GitHub: https://github.com/nkeynes
--- a/docs/index.html
+++ b/docs/index.html
@@ -7,15 +7,13 @@
  <meta name="description" content="Resize large images in common formats to smaller, web-friendly JPEG, PNG, WebP, GIF and AVIF images of varying dimensions">
  <meta property="og:title" content="sharp - High performance Node.js image processing">
  <meta property="og:image" content="https://cdn.jsdelivr.net/gh/lovell/sharp@main/docs/image/sharp-logo-600.png">
-  <meta http-equiv="Content-Security-Policy" content="default-src 'self'; object-src 'none'; style-src 'unsafe-inline';
-    img-src 'unsafe-inline' data: https://cdn.jsdelivr.net/gh/lovell/ https://www.google-analytics.com;
-    connect-src 'self' https://www.google-analytics.com;
-    script-src 'self' 'unsafe-inline' 'unsafe-eval'
-      https://www.google-analytics.com/analytics.js;">
+  <meta http-equiv="Content-Security-Policy" content="default-src 'self'; connect-src 'self'; object-src 'none';
+    style-src 'unsafe-inline';
+    img-src 'unsafe-inline' data: https://cdn.jsdelivr.net/gh/lovell/;
+    script-src 'self' 'unsafe-inline' 'unsafe-eval' https://static.cloudflareinsights.com/beacon.min.js/;">
  <link rel="icon" type="image/svg+xml" href="https://cdn.jsdelivr.net/gh/lovell/sharp@main/docs/image/sharp-logo.svg">
  <link rel="icon" type="image/png" sizes="32x32" href="https://cdn.jsdelivr.net/gh/lovell/sharp@main/docs/image/sharp-logo-32.png">
  <link rel="author" href="/humans.txt" type="text/plain">
-  <link rel="dns-prefetch" href="https://www.google-analytics.com">
  <script type="application/ld+json">
  {
    "@context": "https://schema.org",
@@ -67,7 +65,6 @@
  <div id="docute"></div>
  <script src="docute.min.js"></script>
  <script>
-    /* docute-google-analytics@1/dist/index.min.js */ !function(e,n){"object"==typeof exports&&"undefined"!=typeof module?module.exports=n():"function"==typeof define&&define.amd?define(n):(e=e||self).docuteGoogleAnalytics=n()}(this,function(){"use strict";function e(e){var n;window.ga||((n=document.createElement("script")).async=!0,n.src="https://www.google-analytics.com/analytics.js",document.body.appendChild(n),window.ga=window.ga||function(){(ga.q=ga.q||[]).push(arguments)},ga.l=Number(new Date),ga("create",e,"auto"))}function n(n,t){e(t),ga("set","page",n),ga("send","pageview")}return function(e){return{name:"@google-analytics",extend:function(t){!function(e,t){"function"==typeof e?e(function(e){n(e,t)}):e.afterEach(function(e){n(e.fullPath,t)})}(t.router,e)}}}});
    const docuteApiTitlePlugin = {
      name: 'apiTitle',
      extend(api) {
@@ -126,7 +123,6 @@
      detectSystemDarkTheme: true,
      footer: '<a href="https://pixelplumbing.com/" target="_blank">pixelplumbing.com<a>',
      plugins: [
-        docuteGoogleAnalytics('UA-13034748-12'),
        docuteApiTitlePlugin,
        docuteApiSearchPlugin
      ],
--- a/docs/install.md
+++ b/docs/install.md
@@ -20,11 +20,6 @@ pnpm add sharp
 yarn add sharp
 ```

-```sh
-# yarn v1 (maintenance mode)
-yarn add sharp --ignore-engines
-```
-
 ```sh
 bun add sharp
 ```
@@ -45,7 +40,7 @@ Ready-compiled sharp and libvips binaries are provided for use on the most commo
 * macOS ARM64
 * Linux ARM (glibc >= 2.28)
 * Linux ARM64 (glibc >= 2.26, musl >= 1.2.2)
-* Linux s390x (glibc >= 2.28)
+* Linux s390x (glibc >= 2.31)
 * Linux x64 (glibc >= 2.26, musl >= 1.2.2, CPU with SSE4.2)
 * Windows x64
 * Windows x86
@@ -67,15 +62,17 @@ within the same installation tree and/or using the same lockfile.

 Provides limited support via `--os`, `--cpu` and `--libc` flags.

-Example to support both Intel and ARM CPUs on macOS:
+To support macOS with Intel x64 and ARM64 CPUs:
 ```sh
 npm install --cpu=x64 --os=darwin sharp
 npm install --cpu=arm64 --os=darwin sharp
 ```

-Example to support both glibc and musl-based Linux:
+When the cross-target is Linux, the C standard library must be specified.
+
+To support glibc (e.g. Debian) and musl (e.g. Alpine) Linux with Intel x64 CPUs:
 ```sh
-npm install --cpu=x64 --os=linux sharp
+npm install --cpu=x64 --os=linux --libc=glibc sharp
 npm install --cpu=x64 --os=linux --libc=musl sharp
 ```

@@ -90,7 +87,7 @@ Use the [supportedArchitectures](https://pnpm.io/package_json#pnpmsupportedarchi
 ## Custom libvips

 To use a custom, globally-installed version of libvips instead of the provided binaries,
-make sure it is at least the version listed under `engines.libvips` in the `package.json` file
+make sure it is at least the version listed under `config.libvips` in the `package.json` file
 and that it can be located using `pkg-config --modversion vips-cpp`.

 For help compiling libvips and its dependencies, please see
@@ -103,9 +100,14 @@ and on macOS when running Node.js under Rosetta.

 This module will be compiled from source at `npm install` time when:

-* a globally-installed libvips is detected (set the `SHARP_IGNORE_GLOBAL_LIBVIPS` environment variable to skip this), or
+* a globally-installed libvips is detected, or
 * when the `npm install --build-from-source` flag is used.

+The logic to detect a globally-installed libvips can be skipped by setting the
+`SHARP_IGNORE_GLOBAL_LIBVIPS` (never try to use it) or
+`SHARP_FORCE_GLOBAL_LIBVIPS` (always try to use it, even when missing or outdated)
+environment variables.
+
 Building from source requires:

 * C++11 compiler
--- a/docs/search-index.json
+++ b/docs/search-index.json
--- a/docs/search-index/stop-words.js
+++ b/docs/search-index/stop-words.js
@@ -30,6 +30,7 @@ module.exports = [
  'current',
  'date',
  'default',
+  'deprecated',
  'does',
  'each',
  'either',
@@ -46,6 +47,7 @@ module.exports = [
  'given',
  'has',
  'have',
+  'helps',
  'how',
  'image',
  'implies',
@@ -58,6 +60,7 @@ module.exports = [
  'lots',
  'make',
  'may',
+  'meaning',
  'more',
  'most',
  'much',
@@ -79,6 +82,7 @@ module.exports = [
  'pre',
  'previously',
  'produce',
+  'proper',
  'provide',
  'provided',
  'ready',
@@ -116,6 +120,7 @@ module.exports = [
  'unless',
  'unmaintained',
  'unsuitable',
+  'unsupported',
  'until',
  'use',
  'used',
--- a/install/check.js
+++ b/install/check.js
@@ -10,15 +10,15 @@ try {
    log(msg);
    log('Attempting to build from source via node-gyp');
    try {
-      require('node-addon-api');
-      log('Found node-addon-api');
+      const addonApi = require('node-addon-api');
+      log(`Found node-addon-api ${addonApi.version || ''}`);
    } catch (err) {
      log('Please add node-addon-api to your dependencies');
      return;
    }
    try {
      const gyp = require('node-gyp');
-      log(`Found node-gyp version ${gyp().version}`);
+      log(`Found node-gyp ${gyp().version}`);
    } catch (err) {
      log('Please add node-gyp to your dependencies');
      return;
@@ -30,7 +30,7 @@ try {
    }
  };

-  if (useGlobalLibvips()) {
+  if (useGlobalLibvips(log)) {
    buildFromSource(`Detected globally-installed libvips v${globalLibvipsVersion()}`);
  } else if (process.env.npm_config_build_from_source) {
    buildFromSource('Detected --build-from-source flag');
--- a/lib/colour.js
+++ b/lib/colour.js
@@ -71,8 +71,6 @@ function grayscale (grayscale) {
 * All operations will use this colourspace before converting to the output colourspace,
 * as defined by {@link #tocolourspace|toColourspace}.
 *
- * This feature is experimental and has not yet been fully-tested with all operations.
- *
 * @since 0.29.0
 *
 * @example
--- a/lib/constructor.js
+++ b/lib/constructor.js
@@ -226,6 +226,8 @@ const Sharp = function (input, options) {
    negateAlpha: true,
    medianSize: 0,
    blurSigma: 0,
+    precision: 'integer',
+    minAmpl: 0.2,
    sharpenSigma: 0,
    sharpenM1: 1,
    sharpenM2: 2,
--- a/lib/index.d.ts
+++ b/lib/index.d.ts
@@ -464,7 +464,7 @@ declare namespace sharp {
         * @throws {Error} Invalid parameters
         * @returns A sharp instance that can be used to chain operations
         */
-        blur(sigma?: number | boolean): Sharp;
+        blur(sigma?: number | boolean | BlurOptions): Sharp;

        /**
         * Merge alpha transparency channel, if any, with background.
@@ -571,11 +571,11 @@ declare namespace sharp {

        /**
         * Recomb the image with the specified matrix.
-         * @param inputMatrix 3x3 Recombination matrix
+         * @param inputMatrix 3x3 Recombination matrix or 4x4 Recombination matrix
         * @throws {Error} Invalid parameters
         * @returns A sharp instance that can be used to chain operations
         */
-        recomb(inputMatrix: Matrix3x3): Sharp;
+        recomb(inputMatrix: Matrix3x3 | Matrix4x4): Sharp;

        /**
         * Transforms the image using brightness, saturation, hue rotation and lightness.
@@ -1069,7 +1069,7 @@ declare namespace sharp {
        /** Number of pixels per inch (DPI), if present */
        density?: number | undefined;
        /** String containing JPEG chroma subsampling, 4:2:0 or 4:4:4 for RGB, 4:2:0:4 or 4:4:4:4 for CMYK */
-        chromaSubsampling: string;
+        chromaSubsampling?: string | undefined;
        /** Boolean indicating whether the image is interlaced using a progressive scan */
        isProgressive?: boolean | undefined;
        /** Number of pages/frames contained within the image, with support for TIFF, HEIF, PDF, animated GIF and animated WebP */
@@ -1108,6 +1108,8 @@ declare namespace sharp {
        resolutionUnit?: 'inch' | 'cm' | undefined;
        /** String containing format for images loaded via *magick */
        formatMagick?: string | undefined;
+        /** Array of keyword/text pairs representing PNG text blocks, if present. */
+        comments?: CommentsMetadata[] | undefined;
    }

    interface LevelMetadata {
@@ -1115,6 +1117,11 @@ declare namespace sharp {
        height: number;
    }

+    interface CommentsMetadata {
+        keyword: string;
+        text: string;
+    }
+
    interface Stats {
        /** Array of channel statistics for each channel in the image. */
        channels: ChannelStats[];
@@ -1335,6 +1342,17 @@ declare namespace sharp {
        background?: Color | undefined;
    }

+    type Precision = 'integer' | 'float' | 'approximate';
+
+    interface BlurOptions {
+        /** A value between 0.3 and 1000 representing the sigma of the Gaussian mask, where `sigma = 1 + radius / 2` */
+        sigma: number;
+        /** A value between 0.001 and 1. A smaller value will generate a larger, more accurate mask. */
+        minAmplitude?: number;
+        /** How accurate the operation should be, one of: integer, float, approximate. (optional, default "integer") */
+        precision?: Precision | undefined;
+    }
+
    interface FlattenOptions {
        /** background colour, parsed by the color module, defaults to black. (optional, default {r:0,g:0,b:0}) */
        background?: Color | undefined;
@@ -1479,6 +1497,14 @@ declare namespace sharp {
        tile?: boolean | undefined;
        /** Set to true to avoid premultipling the image below. Equivalent to the --premultiplied vips option. */
        premultiplied?: boolean | undefined;
+        /** number representing the DPI for vector overlay image. (optional, default 72)*/
+        density?: number | undefined;
+        /** Set to true to read all frames/pages of an animated image. (optional, default false) */
+        animated?: boolean | undefined;
+        /** see sharp() constructor, (optional, default 'warning') */
+        failOn?: FailOnOptions | undefined;
+        /** see sharp() constructor, (optional, default 268402689) */
+        limitInputPixels?: number | boolean | undefined;
    }

    interface TileOptions {
@@ -1722,6 +1748,7 @@ declare namespace sharp {

    type Matrix2x2 = [[number, number], [number, number]];
    type Matrix3x3 = [[number, number, number], [number, number, number], [number, number, number]];
+    type Matrix4x4 = [[number, number, number, number], [number, number, number, number], [number, number, number, number], [number, number, number, number]];
 }

 export = sharp;
--- a/lib/input.js
+++ b/lib/input.js
@@ -296,17 +296,17 @@ function _createInputDescriptor (input, inputOptions, containerOptions) {
          }
        }
        if (is.defined(inputOptions.text.width)) {
-          if (is.number(inputOptions.text.width)) {
+          if (is.integer(inputOptions.text.width) && inputOptions.text.width > 0) {
            inputDescriptor.textWidth = inputOptions.text.width;
          } else {
-            throw is.invalidParameterError('text.textWidth', 'number', inputOptions.text.width);
+            throw is.invalidParameterError('text.width', 'positive integer', inputOptions.text.width);
          }
        }
        if (is.defined(inputOptions.text.height)) {
-          if (is.number(inputOptions.text.height)) {
+          if (is.integer(inputOptions.text.height) && inputOptions.text.height > 0) {
            inputDescriptor.textHeight = inputOptions.text.height;
          } else {
-            throw is.invalidParameterError('text.height', 'number', inputOptions.text.height);
+            throw is.invalidParameterError('text.height', 'positive integer', inputOptions.text.height);
          }
        }
        if (is.defined(inputOptions.text.align)) {
@@ -324,10 +324,10 @@ function _createInputDescriptor (input, inputOptions, containerOptions) {
          }
        }
        if (is.defined(inputOptions.text.dpi)) {
-          if (is.number(inputOptions.text.dpi) && is.inRange(inputOptions.text.dpi, 1, 100000)) {
+          if (is.integer(inputOptions.text.dpi) && is.inRange(inputOptions.text.dpi, 1, 1000000)) {
            inputDescriptor.textDpi = inputOptions.text.dpi;
          } else {
-            throw is.invalidParameterError('text.dpi', 'number between 1 and 100000', inputOptions.text.dpi);
+            throw is.invalidParameterError('text.dpi', 'integer between 1 and 1000000', inputOptions.text.dpi);
          }
        }
        if (is.defined(inputOptions.text.rgba)) {
@@ -338,10 +338,10 @@ function _createInputDescriptor (input, inputOptions, containerOptions) {
          }
        }
        if (is.defined(inputOptions.text.spacing)) {
-          if (is.number(inputOptions.text.spacing)) {
+          if (is.integer(inputOptions.text.spacing) && is.inRange(inputOptions.text.spacing, -1000000, 1000000)) {
            inputDescriptor.textSpacing = inputOptions.text.spacing;
          } else {
-            throw is.invalidParameterError('text.spacing', 'number', inputOptions.text.spacing);
+            throw is.invalidParameterError('text.spacing', 'integer between -1000000 and 1000000', inputOptions.text.spacing);
          }
        }
        if (is.defined(inputOptions.text.wrap)) {
@@ -450,6 +450,7 @@ function _isStreamInput () {
 * - `xmp`: Buffer containing raw XMP data, if present
 * - `tifftagPhotoshop`: Buffer containing raw TIFFTAG_PHOTOSHOP data, if present
 * - `formatMagick`: String containing format for images loaded via *magick
+ * - `comments`: Array of keyword/text pairs representing PNG text blocks, if present.
 *
 * @example
 * const metadata = await sharp(input).metadata();
--- a/lib/libvips.js
+++ b/lib/libvips.js
@@ -10,10 +10,10 @@ const semverGreaterThanOrEqualTo = require('semver/functions/gte');
 const semverSatisfies = require('semver/functions/satisfies');
 const detectLibc = require('detect-libc');

-const { engines, optionalDependencies } = require('../package.json');
+const { config, engines, optionalDependencies } = require('../package.json');

 const minimumLibvipsVersionLabelled = process.env.npm_package_config_libvips || /* istanbul ignore next */
-  engines.libvips;
+  config.libvips;
 const minimumLibvipsVersion = semverCoerce(minimumLibvipsVersionLabelled).version;

 const prebuiltPlatforms = [
@@ -162,15 +162,23 @@ const pkgConfigPath = () => {
  }
 };

-const useGlobalLibvips = () => {
+const skipSearch = (status, reason, logger) => {
+  if (logger) {
+    logger(`Detected ${reason}, skipping search for globally-installed libvips`);
+  }
+  return status;
+};
+
+const useGlobalLibvips = (logger) => {
  if (Boolean(process.env.SHARP_IGNORE_GLOBAL_LIBVIPS) === true) {
-    log('Detected SHARP_IGNORE_GLOBAL_LIBVIPS, skipping search for globally-installed libvips');
-    return false;
+    return skipSearch(false, 'SHARP_IGNORE_GLOBAL_LIBVIPS', logger);
+  }
+  if (Boolean(process.env.SHARP_FORCE_GLOBAL_LIBVIPS) === true) {
+    return skipSearch(true, 'SHARP_FORCE_GLOBAL_LIBVIPS', logger);
  }
  /* istanbul ignore next */
  if (isRosetta()) {
-    log('Detected Rosetta, skipping search for globally-installed libvips');
-    return false;
+    return skipSearch(false, 'Rosetta', logger);
  }
  const globalVipsVersion = globalLibvipsVersion();
  return !!globalVipsVersion && /* istanbul ignore next */
--- a/lib/operation.js
+++ b/lib/operation.js
@@ -6,6 +6,17 @@
 const color = require('color');
 const is = require('./is');

+/**
+ * How accurate an operation should be.
+ * @member
+ * @private
+ */
+const vipsPrecision = {
+  integer: 'integer',
+  float: 'float',
+  approximate: 'approximate'
+};
+
 /**
 * Rotate the output image by either an explicit angle
 * or auto-orient based on the EXIF `Orientation` tag.
@@ -367,23 +378,51 @@ function median (size) {
 *   .blur(5)
 *   .toBuffer();
 *
- * @param {number} [sigma] a value between 0.3 and 1000 representing the sigma of the Gaussian mask, where `sigma = 1 + radius / 2`.
+ * @param {Object|number|Boolean} [options]
+ * @param {number} [options.sigma] a value between 0.3 and 1000 representing the sigma of the Gaussian mask, where `sigma = 1 + radius / 2`.
+ * @param {string} [options.precision='integer'] How accurate the operation should be, one of: integer, float, approximate.
+ * @param {number} [options.minAmplitude=0.2] A value between 0.001 and 1. A smaller value will generate a larger, more accurate mask.
 * @returns {Sharp}
 * @throws {Error} Invalid parameters
 */
-function blur (sigma) {
-  if (!is.defined(sigma)) {
+function blur (options) {
+  let sigma;
+  if (is.number(options)) {
+    sigma = options;
+  } else if (is.plainObject(options)) {
+    if (!is.number(options.sigma)) {
+      throw is.invalidParameterError('options.sigma', 'number between 0.3 and 1000', sigma);
+    }
+    sigma = options.sigma;
+    if ('precision' in options) {
+      if (is.string(vipsPrecision[options.precision])) {
+        this.options.precision = vipsPrecision[options.precision];
+      } else {
+        throw is.invalidParameterError('precision', 'one of: integer, float, approximate', options.precision);
+      }
+    }
+    if ('minAmplitude' in options) {
+      if (is.number(options.minAmplitude) && is.inRange(options.minAmplitude, 0.001, 1)) {
+        this.options.minAmpl = options.minAmplitude;
+      } else {
+        throw is.invalidParameterError('minAmplitude', 'number between 0.001 and 1', options.minAmplitude);
+      }
+    }
+  }
+
+  if (!is.defined(options)) {
    // No arguments: default to mild blur
    this.options.blurSigma = -1;
-  } else if (is.bool(sigma)) {
+  } else if (is.bool(options)) {
    // Boolean argument: apply mild blur?
-    this.options.blurSigma = sigma ? -1 : 0;
+    this.options.blurSigma = options ? -1 : 0;
  } else if (is.number(sigma) && is.inRange(sigma, 0.3, 1000)) {
    // Numeric argument: specific sigma
    this.options.blurSigma = sigma;
  } else {
    throw is.invalidParameterError('sigma', 'number between 0.3 and 1000', sigma);
  }
+
  return this;
 }

@@ -787,24 +826,22 @@ function linear (a, b) {
 *     // With this example input, a sepia filter has been applied
 *   });
 *
- * @param {Array<Array<number>>} inputMatrix - 3x3 Recombination matrix
+ * @param {Array<Array<number>>} inputMatrix - 3x3 or 4x4 Recombination matrix
 * @returns {Sharp}
 * @throws {Error} Invalid parameters
 */
 function recomb (inputMatrix) {
-  if (!Array.isArray(inputMatrix) || inputMatrix.length !== 3 ||
-      inputMatrix[0].length !== 3 ||
-      inputMatrix[1].length !== 3 ||
-      inputMatrix[2].length !== 3
-  ) {
-    // must pass in a kernel
-    throw new Error('Invalid recombination matrix');
+  if (!Array.isArray(inputMatrix)) {
+    throw is.invalidParameterError('inputMatrix', 'array', inputMatrix);
  }
-  this.options.recombMatrix = [
-    inputMatrix[0][0], inputMatrix[0][1], inputMatrix[0][2],
-    inputMatrix[1][0], inputMatrix[1][1], inputMatrix[1][2],
-    inputMatrix[2][0], inputMatrix[2][1], inputMatrix[2][2]
-  ].map(Number);
+  if (inputMatrix.length !== 3 && inputMatrix.length !== 4) {
+    throw is.invalidParameterError('inputMatrix', '3x3 or 4x4 array', inputMatrix.length);
+  }
+  const recombMatrix = inputMatrix.flat().map(Number);
+  if (recombMatrix.length !== 9 && recombMatrix.length !== 16) {
+    throw is.invalidParameterError('inputMatrix', 'cardinality of 9 or 16', recombMatrix.length);
+  }
+  this.options.recombMatrix = recombMatrix;
  return this;
 }

--- a/lib/output.js
+++ b/lib/output.js
@@ -65,6 +65,7 @@ const bitdepthFromColourCount = (colours) => 1 << 31 - Math.clz32(Math.ceil(Math
 * `channels` and `premultiplied` (indicating if premultiplication was used).
 * When using a crop strategy also contains `cropOffsetLeft` and `cropOffsetTop`.
 * When using the attention crop strategy also contains `attentionX` and `attentionY`, the focal point of the cropped region.
+ * Animated output will also contain `pageHeight` and `pages`.
 * May also contain `textAutofitDpi` (dpi the font was rendered at) if image was created from text.
 * @returns {Promise<Object>} - when no callback is provided
 * @throws {Error} Invalid parameters
@@ -109,6 +110,7 @@ function toFile (fileOut, callback) {
 * - `info` contains the output image `format`, `size` (bytes), `width`, `height`,
 * `channels` and `premultiplied` (indicating if premultiplication was used).
 * When using a crop strategy also contains `cropOffsetLeft` and `cropOffsetTop`.
+ * Animated output will also contain `pageHeight` and `pages`.
 * May also contain `textAutofitDpi` (dpi the font was rendered at) if image was created from text.
 *
 * A `Promise` is returned when `callback` is not provided.
--- a/lib/resize.js
+++ b/lib/resize.js
@@ -68,6 +68,7 @@ const strategy = {
 */
 const kernel = {
  nearest: 'nearest',
+  linear: 'linear',
  cubic: 'cubic',
  mitchell: 'mitchell',
  lanczos2: 'lanczos2',
@@ -135,18 +136,22 @@ function isResizeExpected (options) {
 *
 * Some of these values are based on the [object-position](https://developer.mozilla.org/en-US/docs/Web/CSS/object-position) CSS property.
 *
- * The experimental strategy-based approach resizes so one dimension is at its target length
+ * The strategy-based approach initially resizes so one dimension is at its target length
 * then repeatedly ranks edge regions, discarding the edge with the lowest score based on the selected strategy.
 * - `entropy`: focus on the region with the highest [Shannon entropy](https://en.wikipedia.org/wiki/Entropy_%28information_theory%29).
 * - `attention`: focus on the region with the highest luminance frequency, colour saturation and presence of skin tones.
 *
- * Possible interpolation kernels are:
+ * Possible downsizing kernels are:
 * - `nearest`: Use [nearest neighbour interpolation](http://en.wikipedia.org/wiki/Nearest-neighbor_interpolation).
+ * - `linear`: Use a [triangle filter](https://en.wikipedia.org/wiki/Triangular_function).
 * - `cubic`: Use a [Catmull-Rom spline](https://en.wikipedia.org/wiki/Centripetal_Catmull%E2%80%93Rom_spline).
 * - `mitchell`: Use a [Mitchell-Netravali spline](https://www.cs.utexas.edu/~fussell/courses/cs384g-fall2013/lectures/mitchell/Mitchell.pdf).
 * - `lanczos2`: Use a [Lanczos kernel](https://en.wikipedia.org/wiki/Lanczos_resampling#Lanczos_kernel) with `a=2`.
 * - `lanczos3`: Use a Lanczos kernel with `a=3` (the default).
 *
+ * When upsampling, these kernels map to `nearest`, `linear` and `cubic` interpolators.
+ * Downsampling kernels without a matching upsampling interpolator map to `cubic`.
+ *
 * Only one resize can occur per pipeline.
 * Previous calls to `resize` in the same pipeline will be ignored.
 *
@@ -239,7 +244,7 @@ function isResizeExpected (options) {
 * @param {String} [options.fit='cover'] - How the image should be resized/cropped to fit the target dimension(s), one of `cover`, `contain`, `fill`, `inside` or `outside`.
 * @param {String} [options.position='centre'] - A position, gravity or strategy to use when `fit` is `cover` or `contain`.
 * @param {String|Object} [options.background={r: 0, g: 0, b: 0, alpha: 1}] - background colour when `fit` is `contain`, parsed by the [color](https://www.npmjs.org/package/color) module, defaults to black without transparency.
- * @param {String} [options.kernel='lanczos3'] - The kernel to use for image reduction. Use the `fastShrinkOnLoad` option to control kernel vs shrink-on-load.
+ * @param {String} [options.kernel='lanczos3'] - The kernel to use for image reduction and the inferred interpolator to use for upsampling. Use the `fastShrinkOnLoad` option to control kernel vs shrink-on-load.
 * @param {Boolean} [options.withoutEnlargement=false] - Do not scale up if the width *or* height are already less than the target dimensions, equivalent to GraphicsMagick's `>` geometry option. This may result in output dimensions smaller than the target dimensions.
 * @param {Boolean} [options.withoutReduction=false] - Do not scale down if the width *or* height are already greater than the target dimensions, equivalent to GraphicsMagick's `<` geometry option. This may still result in a crop to reach the target dimensions.
 * @param {Boolean} [options.fastShrinkOnLoad=true] - Take greater advantage of the JPEG and WebP shrink-on-load feature, which can lead to a slight moiré pattern or round-down of an auto-scaled dimension.
--- a/lib/sharp.js
+++ b/lib/sharp.js
@@ -57,7 +57,6 @@ if (sharp) {
    help.push(
      '- Ensure optional dependencies can be installed:',
      '    npm install --include=optional sharp',
-      '    yarn add sharp --ignore-engines',
      '- Ensure your package manager supports multi-platform installation:',
      '    See https://sharp.pixelplumbing.com/install#cross-platform',
      '- Add platform-specific dependencies:',
@@ -73,9 +72,9 @@ if (sharp) {
  }
  if (isLinux && /(symbol not found|CXXABI_)/i.test(messages)) {
    try {
-      const { engines } = require(`@img/sharp-libvips-${runtimePlatform}/package`);
+      const { config } = require(`@img/sharp-libvips-${runtimePlatform}/package`);
      const libcFound = `${familySync()} ${versionSync()}`;
-      const libcRequires = `${engines.musl ? 'musl' : 'glibc'} ${engines.musl || engines.glibc}`;
+      const libcRequires = `${config.musl ? 'musl' : 'glibc'} ${config.musl || config.glibc}`;
      help.push(
        '- Update your OS:',
        `    Found ${libcFound}`,
--- a/lib/utility.js
+++ b/lib/utility.js
@@ -75,6 +75,13 @@ if (!libvipsVersion.isGlobal) {
 }
 versions.sharp = require('../package.json').version;

+/* istanbul ignore next */
+if (versions.heif && format.heif) {
+  // Prebuilt binaries provide AV1
+  format.heif.input.fileSuffix = ['.avif'];
+  format.heif.output.alias = ['avif'];
+}
+
 /**
 * Gets or, when options are provided, sets the limits of _libvips'_ operation cache.
 * Existing entries in the cache will be trimmed after any change in limits.
@@ -153,6 +160,9 @@ function concurrency (concurrency) {
 if (detectLibc.familySync() === detectLibc.GLIBC && !sharp._isUsingJemalloc()) {
  // Reduce default concurrency to 1 when using glibc memory allocator
  sharp.concurrency(1);
+} else if (detectLibc.familySync() === detectLibc.MUSL && sharp.concurrency() === 1024) {
+  // Reduce default concurrency when musl thread over-subscription detected
+  sharp.concurrency(require('node:os').availableParallelism());
 }

 /**
--- a/npm/darwin-arm64/package.json
+++ b/npm/darwin-arm64/package.json
@@ -1,6 +1,6 @@
 {
  "name": "@img/sharp-darwin-arm64",
-  "version": "0.33.3-rc.0",
+  "version": "0.33.5",
  "description": "Prebuilt sharp for use with macOS 64-bit ARM",
  "author": "Lovell Fuller <npm@lovell.info>",
  "homepage": "https://sharp.pixelplumbing.com",
@@ -15,7 +15,7 @@
  },
  "preferUnplugged": true,
  "optionalDependencies": {
-    "@img/sharp-libvips-darwin-arm64": "1.0.2"
+    "@img/sharp-libvips-darwin-arm64": "1.0.4"
  },
  "files": [
    "lib"
@@ -29,11 +29,7 @@
    "./package": "./package.json"
  },
  "engines": {
-    "node": "^18.17.0 || ^20.3.0 || >=21.0.0",
-    "npm": ">=9.6.5",
-    "yarn": ">=3.2.0",
-    "pnpm": ">=7.1.0",
-    "glibc": ">=2.26"
+    "node": "^18.17.0 || ^20.3.0 || >=21.0.0"
  },
  "os": [
    "darwin"
--- a/npm/darwin-x64/package.json
+++ b/npm/darwin-x64/package.json
@@ -1,6 +1,6 @@
 {
  "name": "@img/sharp-darwin-x64",
-  "version": "0.33.3-rc.0",
+  "version": "0.33.5",
  "description": "Prebuilt sharp for use with macOS x64",
  "author": "Lovell Fuller <npm@lovell.info>",
  "homepage": "https://sharp.pixelplumbing.com",
@@ -15,7 +15,7 @@
  },
  "preferUnplugged": true,
  "optionalDependencies": {
-    "@img/sharp-libvips-darwin-x64": "1.0.2"
+    "@img/sharp-libvips-darwin-x64": "1.0.4"
  },
  "files": [
    "lib"
@@ -29,11 +29,7 @@
    "./package": "./package.json"
  },
  "engines": {
-    "node": "^18.17.0 || ^20.3.0 || >=21.0.0",
-    "npm": ">=9.6.5",
-    "yarn": ">=3.2.0",
-    "pnpm": ">=7.1.0",
-    "glibc": ">=2.26"
+    "node": "^18.17.0 || ^20.3.0 || >=21.0.0"
  },
  "os": [
    "darwin"
--- a/npm/linux-arm/package.json
+++ b/npm/linux-arm/package.json
@@ -1,6 +1,6 @@
 {
  "name": "@img/sharp-linux-arm",
-  "version": "0.33.3-rc.0",
+  "version": "0.33.5",
  "description": "Prebuilt sharp for use with Linux (glibc) ARM (32-bit)",
  "author": "Lovell Fuller <npm@lovell.info>",
  "homepage": "https://sharp.pixelplumbing.com",
@@ -15,7 +15,7 @@
  },
  "preferUnplugged": true,
  "optionalDependencies": {
-    "@img/sharp-libvips-linux-arm": "1.0.2"
+    "@img/sharp-libvips-linux-arm": "1.0.5"
  },
  "files": [
    "lib"
@@ -29,10 +29,9 @@
    "./package": "./package.json"
  },
  "engines": {
-    "node": "^18.17.0 || ^20.3.0 || >=21.0.0",
-    "npm": ">=9.6.5",
-    "yarn": ">=3.2.0",
-    "pnpm": ">=7.1.0",
+    "node": "^18.17.0 || ^20.3.0 || >=21.0.0"
+  },
+  "config": {
    "glibc": ">=2.28"
  },
  "os": [
--- a/npm/linux-arm64/package.json
+++ b/npm/linux-arm64/package.json
@@ -1,6 +1,6 @@
 {
  "name": "@img/sharp-linux-arm64",
-  "version": "0.33.3-rc.0",
+  "version": "0.33.5",
  "description": "Prebuilt sharp for use with Linux (glibc) 64-bit ARM",
  "author": "Lovell Fuller <npm@lovell.info>",
  "homepage": "https://sharp.pixelplumbing.com",
@@ -15,7 +15,7 @@
  },
  "preferUnplugged": true,
  "optionalDependencies": {
-    "@img/sharp-libvips-linux-arm64": "1.0.2"
+    "@img/sharp-libvips-linux-arm64": "1.0.4"
  },
  "files": [
    "lib"
@@ -29,10 +29,9 @@
    "./package": "./package.json"
  },
  "engines": {
-    "node": "^18.17.0 || ^20.3.0 || >=21.0.0",
-    "npm": ">=9.6.5",
-    "yarn": ">=3.2.0",
-    "pnpm": ">=7.1.0",
+    "node": "^18.17.0 || ^20.3.0 || >=21.0.0"
+  },
+  "config": {
    "glibc": ">=2.26"
  },
  "os": [
--- a/npm/linux-s390x/package.json
+++ b/npm/linux-s390x/package.json
@@ -1,6 +1,6 @@
 {
  "name": "@img/sharp-linux-s390x",
-  "version": "0.33.3-rc.0",
+  "version": "0.33.5",
  "description": "Prebuilt sharp for use with Linux (glibc) s390x",
  "author": "Lovell Fuller <npm@lovell.info>",
  "homepage": "https://sharp.pixelplumbing.com",
@@ -15,7 +15,7 @@
  },
  "preferUnplugged": true,
  "optionalDependencies": {
-    "@img/sharp-libvips-linux-s390x": "1.0.2"
+    "@img/sharp-libvips-linux-s390x": "1.0.4"
  },
  "files": [
    "lib"
@@ -29,11 +29,10 @@
    "./package": "./package.json"
  },
  "engines": {
-    "node": "^18.17.0 || ^20.3.0 || >=21.0.0",
-    "npm": ">=9.6.5",
-    "yarn": ">=3.2.0",
-    "pnpm": ">=7.1.0",
-    "glibc": ">=2.28"
+    "node": "^18.17.0 || ^20.3.0 || >=21.0.0"
+  },
+  "config": {
+    "glibc": ">=2.31"
  },
  "os": [
    "linux"
--- a/npm/linux-x64/package.json
+++ b/npm/linux-x64/package.json
@@ -1,6 +1,6 @@
 {
  "name": "@img/sharp-linux-x64",
-  "version": "0.33.3-rc.0",
+  "version": "0.33.5",
  "description": "Prebuilt sharp for use with Linux (glibc) x64",
  "author": "Lovell Fuller <npm@lovell.info>",
  "homepage": "https://sharp.pixelplumbing.com",
@@ -15,7 +15,7 @@
  },
  "preferUnplugged": true,
  "optionalDependencies": {
-    "@img/sharp-libvips-linux-x64": "1.0.2"
+    "@img/sharp-libvips-linux-x64": "1.0.4"
  },
  "files": [
    "lib"
@@ -29,10 +29,9 @@
    "./package": "./package.json"
  },
  "engines": {
-    "node": "^18.17.0 || ^20.3.0 || >=21.0.0",
-    "npm": ">=9.6.5",
-    "yarn": ">=3.2.0",
-    "pnpm": ">=7.1.0",
+    "node": "^18.17.0 || ^20.3.0 || >=21.0.0"
+  },
+  "config": {
    "glibc": ">=2.26"
  },
  "os": [
--- a/npm/linuxmusl-arm64/package.json
+++ b/npm/linuxmusl-arm64/package.json
@@ -1,6 +1,6 @@
 {
  "name": "@img/sharp-linuxmusl-arm64",
-  "version": "0.33.3-rc.0",
+  "version": "0.33.5",
  "description": "Prebuilt sharp for use with Linux (musl) 64-bit ARM",
  "author": "Lovell Fuller <npm@lovell.info>",
  "homepage": "https://sharp.pixelplumbing.com",
@@ -15,7 +15,7 @@
  },
  "preferUnplugged": true,
  "optionalDependencies": {
-    "@img/sharp-libvips-linuxmusl-arm64": "1.0.2"
+    "@img/sharp-libvips-linuxmusl-arm64": "1.0.4"
  },
  "files": [
    "lib"
@@ -29,10 +29,9 @@
    "./package": "./package.json"
  },
  "engines": {
-    "node": "^18.17.0 || ^20.3.0 || >=21.0.0",
-    "npm": ">=9.6.5",
-    "yarn": ">=3.2.0",
-    "pnpm": ">=7.1.0",
+    "node": "^18.17.0 || ^20.3.0 || >=21.0.0"
+  },
+  "config": {
    "musl": ">=1.2.2"
  },
  "os": [
--- a/npm/linuxmusl-x64/package.json
+++ b/npm/linuxmusl-x64/package.json
@@ -1,6 +1,6 @@
 {
  "name": "@img/sharp-linuxmusl-x64",
-  "version": "0.33.3-rc.0",
+  "version": "0.33.5",
  "description": "Prebuilt sharp for use with Linux (musl) x64",
  "author": "Lovell Fuller <npm@lovell.info>",
  "homepage": "https://sharp.pixelplumbing.com",
@@ -15,7 +15,7 @@
  },
  "preferUnplugged": true,
  "optionalDependencies": {
-    "@img/sharp-libvips-linuxmusl-x64": "1.0.2"
+    "@img/sharp-libvips-linuxmusl-x64": "1.0.4"
  },
  "files": [
    "lib"
@@ -29,10 +29,9 @@
    "./package": "./package.json"
  },
  "engines": {
-    "node": "^18.17.0 || ^20.3.0 || >=21.0.0",
-    "npm": ">=9.6.5",
-    "yarn": ">=3.2.0",
-    "pnpm": ">=7.1.0",
+    "node": "^18.17.0 || ^20.3.0 || >=21.0.0"
+  },
+  "config": {
    "musl": ">=1.2.2"
  },
  "os": [
--- a/npm/package.json
+++ b/npm/package.json
@@ -1,6 +1,6 @@
 {
  "name": "@img/sharp",
-  "version": "0.33.3-rc.0",
+  "version": "0.33.5",
  "private": "true",
  "workspaces": [
    "darwin-arm64",
--- a/npm/wasm32/package.json
+++ b/npm/wasm32/package.json
@@ -1,6 +1,6 @@
 {
  "name": "@img/sharp-wasm32",
-  "version": "0.33.3-rc.0",
+  "version": "0.33.5",
  "description": "Prebuilt sharp for use with wasm32",
  "author": "Lovell Fuller <npm@lovell.info>",
  "homepage": "https://sharp.pixelplumbing.com",
@@ -28,13 +28,10 @@
    "./versions": "./versions.json"
  },
  "engines": {
-    "node": "^18.17.0 || ^20.3.0 || >=21.0.0",
-    "npm": ">=9.6.5",
-    "yarn": ">=3.2.0",
-    "pnpm": ">=7.1.0"
+    "node": "^18.17.0 || ^20.3.0 || >=21.0.0"
  },
  "dependencies": {
-    "@emnapi/runtime": "^1.1.0"
+    "@emnapi/runtime": "^1.2.0"
  },
  "cpu": [
    "wasm32"
--- a/npm/win32-ia32/package.json
+++ b/npm/win32-ia32/package.json
@@ -1,6 +1,6 @@
 {
  "name": "@img/sharp-win32-ia32",
-  "version": "0.33.3-rc.0",
+  "version": "0.33.5",
  "description": "Prebuilt sharp for use with Windows x86 (32-bit)",
  "author": "Lovell Fuller <npm@lovell.info>",
  "homepage": "https://sharp.pixelplumbing.com",
@@ -28,10 +28,7 @@
    "./versions": "./versions.json"
  },
  "engines": {
-    "node": "^18.17.0 || ^20.3.0 || >=21.0.0",
-    "npm": ">=9.6.5",
-    "yarn": ">=3.2.0",
-    "pnpm": ">=7.1.0"
+    "node": "^18.17.0 || ^20.3.0 || >=21.0.0"
  },
  "os": [
    "win32"
--- a/npm/win32-x64/package.json
+++ b/npm/win32-x64/package.json
@@ -1,6 +1,6 @@
 {
  "name": "@img/sharp-win32-x64",
-  "version": "0.33.3-rc.0",
+  "version": "0.33.5",
  "description": "Prebuilt sharp for use with Windows x64",
  "author": "Lovell Fuller <npm@lovell.info>",
  "homepage": "https://sharp.pixelplumbing.com",
@@ -28,10 +28,7 @@
    "./versions": "./versions.json"
  },
  "engines": {
-    "node": "^18.17.0 || ^20.3.0 || >=21.0.0",
-    "npm": ">=9.6.5",
-    "yarn": ">=3.2.0",
-    "pnpm": ">=7.1.0"
+    "node": "^18.17.0 || ^20.3.0 || >=21.0.0"
  },
  "os": [
    "win32"
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
  "name": "sharp",
  "description": "High performance Node.js image processing, the fastest module to resize JPEG, PNG, WebP, GIF, AVIF and TIFF images",
-  "version": "0.33.3-rc.0",
+  "version": "0.33.5",
  "author": "Lovell Fuller <npm@lovell.info>",
  "homepage": "https://sharp.pixelplumbing.com",
  "contributors": [
@@ -82,13 +82,14 @@
    "Joris Dugué <zaruike10@gmail.com>",
    "Chris Banks <christopher.bradley.banks@gmail.com>",
    "Ompal Singh <ompal.hitm09@gmail.com>",
-    "Brodan <christopher.hranj@gmail.com",
+    "Brodan <christopher.hranj@gmail.com>",
    "Ankur Parihar <ankur.github@gmail.com>",
    "Brahim Ait elhaj <brahima@gmail.com>",
    "Mart Jansink <m.jansink@gmail.com>",
    "Lachlan Newman <lachnewman007@gmail.com>",
    "Dennis Beatty <dennis@dcbeatty.com>",
-    "Ingvar Stepanyan <me@rreverser.com>"
+    "Ingvar Stepanyan <me@rreverser.com>",
+    "Don Denton <don@happycollision.com>"
  ],
  "scripts": {
    "install": "node install/check",
@@ -138,56 +139,58 @@
  "dependencies": {
    "color": "^4.2.3",
    "detect-libc": "^2.0.3",
-    "semver": "^7.6.0"
+    "semver": "^7.6.3"
  },
  "optionalDependencies": {
-    "@img/sharp-darwin-arm64": "0.33.3-rc.0",
-    "@img/sharp-darwin-x64": "0.33.3-rc.0",
-    "@img/sharp-libvips-darwin-arm64": "1.0.2",
-    "@img/sharp-libvips-darwin-x64": "1.0.2",
-    "@img/sharp-libvips-linux-arm": "1.0.2",
-    "@img/sharp-libvips-linux-arm64": "1.0.2",
-    "@img/sharp-libvips-linux-s390x": "1.0.2",
-    "@img/sharp-libvips-linux-x64": "1.0.2",
-    "@img/sharp-libvips-linuxmusl-arm64": "1.0.2",
-    "@img/sharp-libvips-linuxmusl-x64": "1.0.2",
-    "@img/sharp-linux-arm": "0.33.3-rc.0",
-    "@img/sharp-linux-arm64": "0.33.3-rc.0",
-    "@img/sharp-linux-s390x": "0.33.3-rc.0",
-    "@img/sharp-linux-x64": "0.33.3-rc.0",
-    "@img/sharp-linuxmusl-arm64": "0.33.3-rc.0",
-    "@img/sharp-linuxmusl-x64": "0.33.3-rc.0",
-    "@img/sharp-wasm32": "0.33.3-rc.0",
-    "@img/sharp-win32-ia32": "0.33.3-rc.0",
-    "@img/sharp-win32-x64": "0.33.3-rc.0"
+    "@img/sharp-darwin-arm64": "0.33.5",
+    "@img/sharp-darwin-x64": "0.33.5",
+    "@img/sharp-libvips-darwin-arm64": "1.0.4",
+    "@img/sharp-libvips-darwin-x64": "1.0.4",
+    "@img/sharp-libvips-linux-arm": "1.0.5",
+    "@img/sharp-libvips-linux-arm64": "1.0.4",
+    "@img/sharp-libvips-linux-s390x": "1.0.4",
+    "@img/sharp-libvips-linux-x64": "1.0.4",
+    "@img/sharp-libvips-linuxmusl-arm64": "1.0.4",
+    "@img/sharp-libvips-linuxmusl-x64": "1.0.4",
+    "@img/sharp-linux-arm": "0.33.5",
+    "@img/sharp-linux-arm64": "0.33.5",
+    "@img/sharp-linux-s390x": "0.33.5",
+    "@img/sharp-linux-x64": "0.33.5",
+    "@img/sharp-linuxmusl-arm64": "0.33.5",
+    "@img/sharp-linuxmusl-x64": "0.33.5",
+    "@img/sharp-wasm32": "0.33.5",
+    "@img/sharp-win32-ia32": "0.33.5",
+    "@img/sharp-win32-x64": "0.33.5"
  },
  "devDependencies": {
-    "@emnapi/runtime": "^1.1.0",
-    "@img/sharp-libvips-dev": "1.0.2",
-    "@img/sharp-libvips-dev-wasm32": "1.0.3",
-    "@img/sharp-libvips-win32-ia32": "1.0.2",
-    "@img/sharp-libvips-win32-x64": "1.0.2",
+    "@emnapi/runtime": "^1.2.0",
+    "@img/sharp-libvips-dev": "1.0.4",
+    "@img/sharp-libvips-dev-wasm32": "1.0.5",
+    "@img/sharp-libvips-win32-ia32": "1.0.4",
+    "@img/sharp-libvips-win32-x64": "1.0.4",
    "@types/node": "*",
    "async": "^3.2.5",
    "cc": "^3.0.1",
-    "emnapi": "^1.1.0",
+    "emnapi": "^1.2.0",
    "exif-reader": "^2.0.1",
    "extract-zip": "^2.0.1",
    "icc": "^3.0.0",
-    "jsdoc-to-markdown": "^8.0.1",
+    "jsdoc-to-markdown": "^8.0.3",
    "license-checker": "^25.0.1",
-    "mocha": "^10.3.0",
-    "node-addon-api": "^8.0.0",
-    "nyc": "^15.1.0",
-    "prebuild": "^13.0.0",
+    "mocha": "^10.7.3",
+    "node-addon-api": "^8.1.0",
+    "nyc": "^17.0.0",
+    "prebuild": "^13.0.1",
    "semistandard": "^17.0.0",
-    "tar-fs": "^3.0.5",
-    "tsd": "^0.30.7"
+    "tar-fs": "^3.0.6",
+    "tsd": "^0.31.1"
  },
  "license": "Apache-2.0",
  "engines": {
-    "node": "^18.17.0 || ^20.3.0 || >=21.0.0",
-    "libvips": ">=8.15.2"
+    "node": "^18.17.0 || ^20.3.0 || >=21.0.0"
+  },
+  "config": {
+    "libvips": ">=8.15.3"
  },
  "funding": {
    "url": "https://opencollective.com/libvips"
--- a/src/binding.gyp
+++ b/src/binding.gyp
@@ -192,7 +192,7 @@
                '-Oz',
                '-sALLOW_MEMORY_GROWTH',
                '-sENVIRONMENT=node',
-                '-sEXPORTED_FUNCTIONS=["_vips_shutdown", "_uv_library_shutdown"]',
+                '-sEXPORTED_FUNCTIONS=["emnapiInit", "_vips_shutdown", "_uv_library_shutdown"]',
                '-sNODERAWFS',
                '-sTEXTDECODER=0',
                '-sWASM_ASYNC_COMPILATION=0',
--- a/src/common.cc
+++ b/src/common.cc
@@ -75,7 +75,7 @@ namespace sharp {
      Napi::Buffer<char> buffer = input.Get("buffer").As<Napi::Buffer<char>>();
      descriptor->bufferLength = buffer.Length();
      descriptor->buffer = buffer.Data();
-      descriptor->isBuffer = TRUE;
+      descriptor->isBuffer = true;
    }
    descriptor->failOn = AttrAsEnum<VipsFailOn>(input, "failOn", VIPS_TYPE_FAIL_ON);
    // Density for vector-based input
@@ -384,7 +384,7 @@ namespace sharp {
              ->set("access", descriptor->access)
              ->set("fail_on", descriptor->failOn);
            if (descriptor->unlimited && ImageTypeSupportsUnlimited(imageType)) {
-              option->set("unlimited", TRUE);
+              option->set("unlimited", true);
            }
            if (imageType == ImageType::SVG || imageType == ImageType::PDF) {
              option->set("dpi", descriptor->density);
@@ -488,7 +488,7 @@ namespace sharp {
              ->set("access", descriptor->access)
              ->set("fail_on", descriptor->failOn);
            if (descriptor->unlimited && ImageTypeSupportsUnlimited(imageType)) {
-              option->set("unlimited", TRUE);
+              option->set("unlimited", true);
            }
            if (imageType == ImageType::SVG || imageType == ImageType::PDF) {
              option->set("dpi", descriptor->density);
@@ -768,7 +768,7 @@ namespace sharp {
        int *timeout = VIPS_NEW(im, int);
        *timeout = seconds;
        g_signal_connect(im, "eval", G_CALLBACK(VipsProgressCallBack), timeout);
-        vips_image_set_progress(im, TRUE);
+        vips_image_set_progress(im, true);
      }
    }
  }
@@ -778,7 +778,7 @@ namespace sharp {
  */
  void VipsProgressCallBack(VipsImage *im, VipsProgress *progress, int *timeout) {
    if (*timeout > 0 && progress->run >= *timeout) {
-      vips_image_set_kill(im, TRUE);
+      vips_image_set_kill(im, true);
      vips_error("timeout", "%d%% complete", progress->percent);
      *timeout = 0;
    }
@@ -1081,9 +1081,10 @@ namespace sharp {
  /*
    Ensure decoding remains sequential.
  */
-  VImage StaySequential(VImage image, VipsAccess access, bool condition) {
-    if (access == VIPS_ACCESS_SEQUENTIAL && condition) {
-      return image.copy_memory();
+  VImage StaySequential(VImage image, bool condition) {
+    if (vips_image_is_sequential(image.get_image()) && condition) {
+      image = image.copy_memory().copy();
+      image.remove(VIPS_META_SEQUENTIAL);
    }
    return image;
  }
--- a/src/common.h
+++ b/src/common.h
@@ -16,8 +16,8 @@

 #if (VIPS_MAJOR_VERSION < 8) || \
  (VIPS_MAJOR_VERSION == 8 && VIPS_MINOR_VERSION < 15) || \
-  (VIPS_MAJOR_VERSION == 8 && VIPS_MINOR_VERSION == 15 && VIPS_MICRO_VERSION < 2)
-#error "libvips version 8.15.2+ is required - please see https://sharp.pixelplumbing.com/install"
+  (VIPS_MAJOR_VERSION == 8 && VIPS_MINOR_VERSION == 15 && VIPS_MICRO_VERSION < 3)
+#error "libvips version 8.15.3+ is required - please see https://sharp.pixelplumbing.com/install"
 #endif

 #if ((!defined(__clang__)) && defined(__GNUC__) && (__GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 6)))
@@ -79,12 +79,12 @@ namespace sharp {
      buffer(nullptr),
      failOn(VIPS_FAIL_ON_WARNING),
      limitInputPixels(0x3FFF * 0x3FFF),
-      unlimited(FALSE),
+      unlimited(false),
      access(VIPS_ACCESS_RANDOM),
      bufferLength(0),
-      isBuffer(FALSE),
+      isBuffer(false),
      density(72.0),
-      ignoreIcc(FALSE),
+      ignoreIcc(false),
      rawDepth(VIPS_FORMAT_UCHAR),
      rawChannels(0),
      rawWidth(0),
@@ -103,9 +103,9 @@ namespace sharp {
      textWidth(0),
      textHeight(0),
      textAlign(VIPS_ALIGN_LOW),
-      textJustify(FALSE),
+      textJustify(false),
      textDpi(72),
-      textRgba(FALSE),
+      textRgba(false),
      textSpacing(0),
      textWrap(VIPS_TEXT_WRAP_WORD),
      textAutofitDpi(0) {}
@@ -386,7 +386,7 @@ namespace sharp {
  /*
    Ensure decoding remains sequential.
  */
-  VImage StaySequential(VImage image, VipsAccess access, bool condition = TRUE);
+  VImage StaySequential(VImage image, bool condition = true);

 }  // namespace sharp

--- a/src/emscripten/common.gypi
+++ b/src/emscripten/common.gypi
@@ -9,8 +9,7 @@
    'default_configuration': 'Release',
    'type': 'executable',
    'cflags': [
-      '-pthread',
-      '-sDEFAULT_TO_CXX=0'
+      '-pthread'
    ],
    'cflags_cc': [
      '-pthread'
@@ -19,6 +18,7 @@
      '--js-library=<!(node -p "require(\'emnapi\').js_library")',
      '-sAUTO_JS_LIBRARIES=0',
      '-sAUTO_NATIVE_LIBRARIES=0',
+      '-sDEFAULT_TO_CXX=0',
      '-sNODEJS_CATCH_EXIT=0',
      '-sNODEJS_CATCH_REJECTION=0'
    ],
@@ -28,7 +28,7 @@
      'EMNAPI_WORKER_POOL_SIZE=1'
    ],
    'include_dirs': [
-      '<!(node -p "require(\'emnapi\').include")'
+      '<!(node -p "require(\'emnapi\').include_dir")'
    ],
    'sources': [
      '<!@(node -p "require(\'emnapi\').sources.map(x => JSON.stringify(path.relative(process.cwd(), x))).join(\' \')")'
--- a/src/metadata.cc
+++ b/src/metadata.cc
@@ -10,6 +10,8 @@
 #include "common.h"
 #include "metadata.h"

+static void* readPNGComment(VipsImage *image, const char *field, GValue *value, void *p);
+
 class MetadataWorker : public Napi::AsyncWorker {
 public:
  MetadataWorker(Napi::Function callback, MetadataBaton *baton, Napi::Function debuglog) :
@@ -131,6 +133,8 @@ class MetadataWorker : public Napi::AsyncWorker {
        memcpy(baton->tifftagPhotoshop, tifftagPhotoshop, tifftagPhotoshopLength);
        baton->tifftagPhotoshopLength = tifftagPhotoshopLength;
      }
+      // PNG comments
+      vips_image_map(image.get_image(), readPNGComment, &baton->comments);
    }

    // Clean up
@@ -246,6 +250,17 @@ class MetadataWorker : public Napi::AsyncWorker {
          Napi::Buffer<char>::NewOrCopy(env, baton->tifftagPhotoshop,
            baton->tifftagPhotoshopLength, sharp::FreeCallback));
      }
+      if (baton->comments.size() > 0) {
+        int i = 0;
+        Napi::Array comments = Napi::Array::New(env, baton->comments.size());
+        for (auto &c : baton->comments) {
+          Napi::Object comment = Napi::Object::New(env);
+          comment.Set("keyword", c.first);
+          comment.Set("text", c.second);
+          comments.Set(i++, comment);
+        }
+        info.Set("comments", comments);
+      }
      Callback().Call(Receiver().Value(), { env.Null(), info });
    } else {
      Callback().Call(Receiver().Value(), { Napi::Error::New(env, sharp::TrimEnd(baton->err)).Value() });
@@ -285,3 +300,21 @@ Napi::Value metadata(const Napi::CallbackInfo& info) {

  return info.Env().Undefined();
 }
+
+const char *PNG_COMMENT_START = "png-comment-";
+const int PNG_COMMENT_START_LEN = strlen(PNG_COMMENT_START);
+
+static void* readPNGComment(VipsImage *image, const char *field, GValue *value, void *p) {
+  MetadataComments *comments = static_cast<MetadataComments *>(p);
+
+  if (vips_isprefix(PNG_COMMENT_START, field)) {
+    const char *keyword = strchr(field + PNG_COMMENT_START_LEN, '-');
+    const char *str;
+    if (keyword != NULL && !vips_image_get_string(image, field, &str)) {
+      keyword++;  // Skip the hyphen
+      comments->push_back(std::make_pair(keyword, str));
+    }
+  }
+
+  return NULL;
+}
--- a/src/metadata.h
+++ b/src/metadata.h
@@ -9,6 +9,8 @@

 #include "./common.h"

+typedef std::vector<std::pair<std::string, std::string>> MetadataComments;
+
 struct MetadataBaton {
  // Input
  sharp::InputDescriptor *input;
@@ -47,6 +49,7 @@ struct MetadataBaton {
  size_t xmpLength;
  char *tifftagPhotoshop;
  size_t tifftagPhotoshopLength;
+  MetadataComments comments;
  std::string err;

  MetadataBaton():
--- a/src/operations.cc
+++ b/src/operations.cc
@@ -144,7 +144,7 @@ namespace sharp {
  /*
   * Gaussian blur. Use sigma of -1.0 for fast blur.
   */
-  VImage Blur(VImage image, double const sigma) {
+  VImage Blur(VImage image, double const sigma, VipsPrecision precision, double const minAmpl) {
    if (sigma == -1.0) {
      // Fast, mild blur - averages neighbouring pixels
      VImage blur = VImage::new_matrixv(3, 3,
@@ -155,7 +155,9 @@ namespace sharp {
      return image.conv(blur);
    } else {
      // Slower, accurate Gaussian blur
-      return StaySequential(image, VIPS_ACCESS_SEQUENTIAL).gaussblur(sigma);
+      return StaySequential(image).gaussblur(sigma, VImage::option()
+        ->set("precision", precision)
+        ->set("min_ampl", minAmpl));
    }
  }

@@ -164,10 +166,10 @@ namespace sharp {
   */
  VImage Convolve(VImage image, int const width, int const height,
    double const scale, double const offset,
-    std::unique_ptr<double[]> const &kernel_v
+    std::vector<double> const &kernel_v
  ) {
    VImage kernel = VImage::new_from_memory(
-      kernel_v.get(),
+      static_cast<void*>(const_cast<double*>(kernel_v.data())),
      width * height * sizeof(double),
      width,
      height,
@@ -183,19 +185,21 @@ namespace sharp {
   * Recomb with a Matrix of the given bands/channel size.
   * Eg. RGB will be a 3x3 matrix.
   */
-  VImage Recomb(VImage image, std::unique_ptr<double[]> const &matrix) {
-    double *m = matrix.get();
+  VImage Recomb(VImage image, std::vector<double> const& matrix) {
+    double* m = const_cast<double*>(matrix.data());
    image = image.colourspace(VIPS_INTERPRETATION_sRGB);
-    return image
-      .recomb(image.bands() == 3
-        ? VImage::new_from_memory(
-          m, 9 * sizeof(double), 3, 3, 1, VIPS_FORMAT_DOUBLE
-        )
-        : VImage::new_matrixv(4, 4,
-          m[0], m[1], m[2], 0.0,
-          m[3], m[4], m[5], 0.0,
-          m[6], m[7], m[8], 0.0,
-          0.0, 0.0, 0.0, 1.0));
+    if (matrix.size() == 9) {
+      return image
+        .recomb(image.bands() == 3
+          ? VImage::new_matrix(3, 3, m, 9)
+          : VImage::new_matrixv(4, 4,
+            m[0], m[1], m[2], 0.0,
+            m[3], m[4], m[5], 0.0,
+            m[6], m[7], m[8], 0.0,
+            0.0, 0.0, 0.0, 1.0));
+    } else {
+      return image.recomb(VImage::new_matrix(4, 4, m, 16));
+    }
  }

  VImage Modulate(VImage image, double const brightness, double const saturation,
@@ -386,7 +390,7 @@ namespace sharp {
      pages.reserve(nPages);

      // Split the image into cropped frames
-      image = StaySequential(image, VIPS_ACCESS_SEQUENTIAL);
+      image = StaySequential(image);
      for (int i = 0; i < nPages; i++) {
        pages.push_back(
          image.extract_area(left, *pageHeight * i + top, width, height));
--- a/src/operations.h
+++ b/src/operations.h
@@ -47,13 +47,13 @@ namespace sharp {
  /*
   * Gaussian blur. Use sigma of -1.0 for fast blur.
   */
-  VImage Blur(VImage image, double const sigma);
+  VImage Blur(VImage image, double const sigma, VipsPrecision precision, double const minAmpl);

  /*
   * Convolution with a kernel.
   */
  VImage Convolve(VImage image, int const width, int const height,
-    double const scale, double const offset, std::unique_ptr<double[]> const &kernel_v);
+    double const scale, double const offset, std::vector<double> const &kernel_v);

  /*
   * Sharpen flat and jagged areas. Use sigma of -1.0 for fast sharpen.
@@ -95,7 +95,7 @@ namespace sharp {
   * Recomb with a Matrix of the given bands/channel size.
   * Eg. RGB will be a 3x3 matrix.
   */
-  VImage Recomb(VImage image, std::unique_ptr<double[]> const &matrix);
+  VImage Recomb(VImage image, std::vector<double> const &matrix);

  /*
   * Modulate brightness, saturation, hue and lightness
--- a/src/pipeline.cc
+++ b/src/pipeline.cc
@@ -70,8 +70,8 @@ class PipelineWorker : public Napi::AsyncWorker {
      // Calculate angle of rotation
      VipsAngle rotation = VIPS_ANGLE_D0;
      VipsAngle autoRotation = VIPS_ANGLE_D0;
-      bool autoFlip = FALSE;
-      bool autoFlop = FALSE;
+      bool autoFlip = false;
+      bool autoFlop = false;

      if (baton->useExifOrientation) {
        // Rotate and flip image according to Exif orientation
@@ -88,7 +88,7 @@ class PipelineWorker : public Napi::AsyncWorker {
          baton->rotationAngle != 0.0);

      if (shouldRotateBefore) {
-        image = sharp::StaySequential(image, access,
+        image = sharp::StaySequential(image,
          rotation != VIPS_ANGLE_D0 ||
          autoRotation != VIPS_ANGLE_D0 ||
          autoFlip ||
@@ -104,17 +104,17 @@ class PipelineWorker : public Napi::AsyncWorker {
        }
        if (autoFlip) {
          image = image.flip(VIPS_DIRECTION_VERTICAL);
-          autoFlip = FALSE;
+          autoFlip = false;
        } else if (baton->flip) {
          image = image.flip(VIPS_DIRECTION_VERTICAL);
-          baton->flip = FALSE;
+          baton->flip = false;
        }
        if (autoFlop) {
          image = image.flip(VIPS_DIRECTION_HORIZONTAL);
-          autoFlop = FALSE;
+          autoFlop = false;
        } else if (baton->flop) {
          image = image.flip(VIPS_DIRECTION_HORIZONTAL);
-          baton->flop = FALSE;
+          baton->flop = false;
        }
        if (rotation != VIPS_ANGLE_D0) {
          if (rotation != VIPS_ANGLE_D180) {
@@ -126,7 +126,7 @@ class PipelineWorker : public Napi::AsyncWorker {
        if (baton->rotationAngle != 0.0) {
          MultiPageUnsupported(nPages, "Rotate");
          std::vector<double> background;
-          std::tie(image, background) = sharp::ApplyAlpha(image, baton->rotationBackground, FALSE);
+          std::tie(image, background) = sharp::ApplyAlpha(image, baton->rotationBackground, false);
          image = image.rotate(baton->rotationAngle, VImage::option()->set("background", background)).copy_memory();
        }
      }
@@ -134,7 +134,7 @@ class PipelineWorker : public Napi::AsyncWorker {
      // Trim
      if (baton->trimThreshold >= 0.0) {
        MultiPageUnsupported(nPages, "Trim");
-        image = sharp::StaySequential(image, access);
+        image = sharp::StaySequential(image);
        image = sharp::Trim(image, baton->trimBackground, baton->trimThreshold, baton->trimLineArt);
        baton->trimOffsetLeft = image.xoffset();
        baton->trimOffsetTop = image.yoffset();
@@ -325,6 +325,7 @@ class PipelineWorker : public Napi::AsyncWorker {
      if ((baton->keepMetadata & VIPS_FOREIGN_KEEP_ICC) && baton->withIccProfile.empty()) {
        // Cache input profile for use with output
        inputProfile = sharp::GetProfile(image);
+        baton->input->ignoreIcc = true;
      }
      char const *processingProfile = image.interpretation() == VIPS_INTERPRETATION_RGB16 ? "p3" : "srgb";
      if (
@@ -337,7 +338,7 @@ class PipelineWorker : public Napi::AsyncWorker {
        // Convert to sRGB/P3 using embedded profile
        try {
          image = image.icc_transform(processingProfile, VImage::option()
-            ->set("embedded", TRUE)
+            ->set("embedded", true)
            ->set("depth", sharp::Is16Bit(image.interpretation()) ? 16 : 8)
            ->set("intent", VIPS_INTENT_PERCEPTUAL));
        } catch(...) {
@@ -357,11 +358,6 @@ class PipelineWorker : public Napi::AsyncWorker {
        image = sharp::Flatten(image, baton->flattenBackground);
      }

-      // Negate the colours in the image
-      if (baton->negate) {
-        image = sharp::Negate(image, baton->negateAlpha);
-      }
-
      // Gamma encoding (darken)
      if (baton->gamma >= 1 && baton->gamma <= 3) {
        image = sharp::Gamma(image, 1.0 / baton->gamma);
@@ -397,7 +393,7 @@ class PipelineWorker : public Napi::AsyncWorker {
          ->set("kernel", baton->kernel));
      }

-      image = sharp::StaySequential(image, access,
+      image = sharp::StaySequential(image,
        autoRotation != VIPS_ANGLE_D0 ||
        baton->flip ||
        autoFlip ||
@@ -500,7 +496,7 @@ class PipelineWorker : public Napi::AsyncWorker {

            // Attention-based or Entropy-based crop
            MultiPageUnsupported(nPages, "Resize strategy");
-            image = sharp::StaySequential(image, access);
+            image = sharp::StaySequential(image);
            image = image.smartcrop(baton->width, baton->height, VImage::option()
              ->set("interesting", baton->position == 16 ? VIPS_INTERESTING_ENTROPY : VIPS_INTERESTING_ATTENTION)
              ->set("premultiplied", shouldPremultiplyAlpha)
@@ -519,7 +515,7 @@ class PipelineWorker : public Napi::AsyncWorker {
      // Rotate post-extract non-90 angle
      if (!baton->rotateBeforePreExtract && baton->rotationAngle != 0.0) {
        MultiPageUnsupported(nPages, "Rotate");
-        image = sharp::StaySequential(image, access);
+        image = sharp::StaySequential(image);
        std::vector<double> background;
        std::tie(image, background) = sharp::ApplyAlpha(image, baton->rotationBackground, shouldPremultiplyAlpha);
        image = image.rotate(baton->rotationAngle, VImage::option()->set("background", background));
@@ -543,7 +539,7 @@ class PipelineWorker : public Napi::AsyncWorker {
      // Affine transform
      if (!baton->affineMatrix.empty()) {
        MultiPageUnsupported(nPages, "Affine");
-        image = sharp::StaySequential(image, access);
+        image = sharp::StaySequential(image);
        std::vector<double> background;
        std::tie(image, background) = sharp::ApplyAlpha(image, baton->affineBackground, shouldPremultiplyAlpha);
        vips::VInterpolate interp = vips::VInterpolate::new_from_name(
@@ -566,6 +562,7 @@ class PipelineWorker : public Napi::AsyncWorker {
          std::vector<double> background;
          std::tie(image, background) = sharp::ApplyAlpha(image, baton->extendBackground, shouldPremultiplyAlpha);

+          image = sharp::StaySequential(image, nPages > 1);
          image = nPages > 1
            ? sharp::EmbedMultiPage(image,
                baton->extendLeft, baton->extendTop, baton->width, baton->height,
@@ -574,7 +571,7 @@ class PipelineWorker : public Napi::AsyncWorker {
                VImage::option()->set("extend", baton->extendWith)->set("background", background));
        } else {
          std::vector<double> ignoredBackground(1);
-          image = sharp::StaySequential(image, baton->input->access);
+          image = sharp::StaySequential(image);
          image = nPages > 1
            ? sharp::EmbedMultiPage(image,
                baton->extendLeft, baton->extendTop, baton->width, baton->height,
@@ -596,7 +593,7 @@ class PipelineWorker : public Napi::AsyncWorker {

      // Blur
      if (shouldBlur) {
-        image = sharp::Blur(image, baton->blurSigma);
+        image = sharp::Blur(image, baton->blurSigma, baton->precision, baton->minAmpl);
      }

      // Unflatten the image
@@ -613,7 +610,7 @@ class PipelineWorker : public Napi::AsyncWorker {
      }

      // Recomb
-      if (baton->recombMatrix != NULL) {
+      if (!baton->recombMatrix.empty()) {
        image = sharp::Recomb(image, baton->recombMatrix);
      }

@@ -670,7 +667,7 @@ class PipelineWorker : public Napi::AsyncWorker {
            if (across != 0 || down != 0) {
              int left;
              int top;
-              compositeImage = sharp::StaySequential(compositeImage, access).replicate(across, down);
+              compositeImage = sharp::StaySequential(compositeImage).replicate(across, down);
              if (composite->hasOffset) {
                std::tie(left, top) = sharp::CalculateCrop(
                  compositeImage.width(), compositeImage.height(), image.width(), image.height(),
@@ -728,13 +725,13 @@ class PipelineWorker : public Napi::AsyncWorker {

      // Apply normalisation - stretch luminance to cover full dynamic range
      if (baton->normalise) {
-        image = sharp::StaySequential(image, access);
+        image = sharp::StaySequential(image);
        image = sharp::Normalise(image, baton->normaliseLower, baton->normaliseUpper);
      }

      // Apply contrast limiting adaptive histogram equalization (CLAHE)
      if (baton->claheWidth != 0 && baton->claheHeight != 0) {
-        image = sharp::StaySequential(image, access);
+        image = sharp::StaySequential(image);
        image = sharp::Clahe(image, baton->claheWidth, baton->claheHeight, baton->claheMaxSlope);
      }

@@ -780,7 +777,7 @@ class PipelineWorker : public Napi::AsyncWorker {
        if ((baton->keepMetadata & VIPS_FOREIGN_KEEP_ICC) && baton->colourspacePipeline != VIPS_INTERPRETATION_CMYK &&
          baton->withIccProfile.empty() && sharp::HasProfile(image)) {
          image = image.icc_transform(processingProfile, VImage::option()
-            ->set("embedded", TRUE)
+            ->set("embedded", true)
            ->set("depth", sharp::Is16Bit(image.interpretation()) ? 16 : 8)
            ->set("intent", VIPS_INTENT_PERCEPTUAL));
        }
@@ -811,7 +808,7 @@ class PipelineWorker : public Napi::AsyncWorker {
        try {
          image = image.icc_transform(const_cast<char*>(baton->withIccProfile.data()), VImage::option()
            ->set("input_profile", processingProfile)
-            ->set("embedded", TRUE)
+            ->set("embedded", true)
            ->set("depth", sharp::Is16Bit(image.interpretation()) ? 16 : 8)
            ->set("intent", VIPS_INTENT_PERCEPTUAL));
        } catch(...) {
@@ -820,6 +817,12 @@ class PipelineWorker : public Napi::AsyncWorker {
      } else if (baton->keepMetadata & VIPS_FOREIGN_KEEP_ICC) {
        image = sharp::SetProfile(image, inputProfile);
      }
+
+      // Negate the colours in the image
+      if (baton->negate) {
+        image = sharp::Negate(image, baton->negateAlpha);
+      }
+
      // Override EXIF Orientation tag
      if (baton->withMetadataOrientation != -1) {
        image = sharp::SetExifOrientation(image, baton->withMetadataOrientation);
@@ -847,6 +850,11 @@ class PipelineWorker : public Napi::AsyncWorker {
      image = sharp::SetAnimationProperties(
        image, nPages, targetPageHeight, baton->delay, baton->loop);

+      if (image.get_typeof(VIPS_META_PAGE_HEIGHT) == G_TYPE_INT) {
+        baton->pageHeightOut = image.get_int(VIPS_META_PAGE_HEIGHT);
+        baton->pagesOut = image.get_int(VIPS_META_N_PAGES);
+      }
+
      // Output
      sharp::SetTimeout(image, baton->timeoutSeconds);
      if (baton->fileOut.empty()) {
@@ -1004,7 +1012,7 @@ class PipelineWorker : public Napi::AsyncWorker {
          if (!sharp::HasAlpha(image)) {
            baton->tileBackground.pop_back();
          }
-          image = sharp::StaySequential(image, access, baton->tileAngle != 0);
+          image = sharp::StaySequential(image, baton->tileAngle != 0);
          vips::VOption *options = BuildOptionsDZ(baton);
          VipsArea *area = reinterpret_cast<VipsArea*>(image.dzsave_buffer(options));
          baton->bufferOut = static_cast<char*>(area->data);
@@ -1206,7 +1214,7 @@ class PipelineWorker : public Napi::AsyncWorker {
          if (!sharp::HasAlpha(image)) {
            baton->tileBackground.pop_back();
          }
-          image = sharp::StaySequential(image, access, baton->tileAngle != 0);
+          image = sharp::StaySequential(image, baton->tileAngle != 0);
          vips::VOption *options = BuildOptionsDZ(baton);
          image.dzsave(const_cast<char*>(baton->fileOut.data()), options);
          baton->formatOut = "dz";
@@ -1282,6 +1290,10 @@ class PipelineWorker : public Napi::AsyncWorker {
      if (baton->input->textAutofitDpi) {
        info.Set("textAutofitDpi", static_cast<uint32_t>(baton->input->textAutofitDpi));
      }
+      if (baton->pageHeightOut) {
+        info.Set("pageHeight", static_cast<int32_t>(baton->pageHeightOut));
+        info.Set("pages", static_cast<int32_t>(baton->pagesOut));
+      }

      if (baton->bufferOutLength > 0) {
        // Add buffer size to info
@@ -1338,16 +1350,16 @@ class PipelineWorker : public Napi::AsyncWorker {
  std::tuple<VipsAngle, bool, bool>
  CalculateExifRotationAndFlip(int const exifOrientation) {
    VipsAngle rotate = VIPS_ANGLE_D0;
-    bool flip = FALSE;
-    bool flop = FALSE;
+    bool flip = false;
+    bool flop = false;
    switch (exifOrientation) {
      case 6: rotate = VIPS_ANGLE_D90; break;
      case 3: rotate = VIPS_ANGLE_D180; break;
      case 8: rotate = VIPS_ANGLE_D270; break;
-      case 2: flop = TRUE; break;  // flop 1
-      case 7: flip = TRUE; rotate = VIPS_ANGLE_D90; break;  // flip 6
-      case 4: flop = TRUE; rotate = VIPS_ANGLE_D180; break;  // flop 3
-      case 5: flip = TRUE; rotate = VIPS_ANGLE_D270; break;  // flip 8
+      case 2: flop = true; break;  // flop 1
+      case 7: flip = true; rotate = VIPS_ANGLE_D90; break;  // flip 6
+      case 4: flop = true; rotate = VIPS_ANGLE_D180; break;  // flop 3
+      case 5: flip = true; rotate = VIPS_ANGLE_D270; break;  // flip 8
    }
    return std::make_tuple(rotate, flip, flop);
  }
@@ -1395,7 +1407,7 @@ class PipelineWorker : public Napi::AsyncWorker {
    std::string suffix;
    if (baton->tileFormat == "png") {
      std::vector<std::pair<std::string, std::string>> options {
-        {"interlace", baton->pngProgressive ? "TRUE" : "FALSE"},
+        {"interlace", baton->pngProgressive ? "true" : "false"},
        {"compression", std::to_string(baton->pngCompressionLevel)},
        {"filter", baton->pngAdaptiveFiltering ? "all" : "none"}
      };
@@ -1404,25 +1416,25 @@ class PipelineWorker : public Napi::AsyncWorker {
      std::vector<std::pair<std::string, std::string>> options {
        {"Q", std::to_string(baton->webpQuality)},
        {"alpha_q", std::to_string(baton->webpAlphaQuality)},
-        {"lossless", baton->webpLossless ? "TRUE" : "FALSE"},
-        {"near_lossless", baton->webpNearLossless ? "TRUE" : "FALSE"},
-        {"smart_subsample", baton->webpSmartSubsample ? "TRUE" : "FALSE"},
+        {"lossless", baton->webpLossless ? "true" : "false"},
+        {"near_lossless", baton->webpNearLossless ? "true" : "false"},
+        {"smart_subsample", baton->webpSmartSubsample ? "true" : "false"},
        {"preset", vips_enum_nick(VIPS_TYPE_FOREIGN_WEBP_PRESET, baton->webpPreset)},
-        {"min_size", baton->webpMinSize ? "TRUE" : "FALSE"},
-        {"mixed", baton->webpMixed ? "TRUE" : "FALSE"},
+        {"min_size", baton->webpMinSize ? "true" : "false"},
+        {"mixed", baton->webpMixed ? "true" : "false"},
        {"effort", std::to_string(baton->webpEffort)}
      };
      suffix = AssembleSuffixString(".webp", options);
    } else {
      std::vector<std::pair<std::string, std::string>> options {
        {"Q", std::to_string(baton->jpegQuality)},
-        {"interlace", baton->jpegProgressive ? "TRUE" : "FALSE"},
+        {"interlace", baton->jpegProgressive ? "true" : "false"},
        {"subsample_mode", baton->jpegChromaSubsampling == "4:4:4" ? "off" : "on"},
-        {"trellis_quant", baton->jpegTrellisQuantisation ? "TRUE" : "FALSE"},
+        {"trellis_quant", baton->jpegTrellisQuantisation ? "true" : "false"},
        {"quant_table", std::to_string(baton->jpegQuantisationTable)},
-        {"overshoot_deringing", baton->jpegOvershootDeringing ? "TRUE": "FALSE"},
-        {"optimize_scans", baton->jpegOptimiseScans ? "TRUE": "FALSE"},
-        {"optimize_coding", baton->jpegOptimiseCoding ? "TRUE": "FALSE"}
+        {"overshoot_deringing", baton->jpegOvershootDeringing ? "true": "false"},
+        {"optimize_scans", baton->jpegOptimiseScans ? "true": "false"},
+        {"optimize_coding", baton->jpegOptimiseCoding ? "true": "false"}
      };
      std::string extname = baton->tileLayout == VIPS_FOREIGN_DZ_LAYOUT_DZ ? ".jpeg" : ".jpg";
      suffix = AssembleSuffixString(extname, options);
@@ -1530,6 +1542,8 @@ Napi::Value pipeline(const Napi::CallbackInfo& info) {
  baton->negate = sharp::AttrAsBool(options, "negate");
  baton->negateAlpha = sharp::AttrAsBool(options, "negateAlpha");
  baton->blurSigma = sharp::AttrAsDouble(options, "blurSigma");
+  baton->precision = sharp::AttrAsEnum<VipsPrecision>(options, "precision", VIPS_TYPE_PRECISION);
+  baton->minAmpl = sharp::AttrAsDouble(options, "minAmpl");
  baton->brightness = sharp::AttrAsDouble(options, "brightness");
  baton->saturation = sharp::AttrAsDouble(options, "saturation");
  baton->hue = sharp::AttrAsInt32(options, "hue");
@@ -1595,17 +1609,18 @@ Napi::Value pipeline(const Napi::CallbackInfo& info) {
    baton->convKernelScale = sharp::AttrAsDouble(kernel, "scale");
    baton->convKernelOffset = sharp::AttrAsDouble(kernel, "offset");
    size_t const kernelSize = static_cast<size_t>(baton->convKernelWidth * baton->convKernelHeight);
-    baton->convKernel = std::unique_ptr<double[]>(new double[kernelSize]);
+    baton->convKernel.resize(kernelSize);
    Napi::Array kdata = kernel.Get("kernel").As<Napi::Array>();
    for (unsigned int i = 0; i < kernelSize; i++) {
      baton->convKernel[i] = sharp::AttrAsDouble(kdata, i);
    }
  }
  if (options.Has("recombMatrix")) {
-    baton->recombMatrix = std::unique_ptr<double[]>(new double[9]);
    Napi::Array recombMatrix = options.Get("recombMatrix").As<Napi::Array>();
-    for (unsigned int i = 0; i < 9; i++) {
-       baton->recombMatrix[i] = sharp::AttrAsDouble(recombMatrix, i);
+    unsigned int matrixElements = recombMatrix.Length();
+    baton->recombMatrix.resize(matrixElements);
+    for (unsigned int i = 0; i < matrixElements; i++) {
+      baton->recombMatrix[i] = sharp::AttrAsDouble(recombMatrix, i);
    }
  }
  baton->colourspacePipeline = sharp::AttrAsEnum<VipsInterpretation>(
--- a/src/pipeline.h
+++ b/src/pipeline.h
@@ -43,6 +43,8 @@ struct PipelineBaton {
  std::string fileOut;
  void *bufferOut;
  size_t bufferOutLength;
+  int pageHeightOut;
+  int pagesOut;
  std::vector<Composite *> composite;
  std::vector<sharp::InputDescriptor *> joinChannelIn;
  int topOffsetPre;
@@ -76,6 +78,8 @@ struct PipelineBaton {
  bool negate;
  bool negateAlpha;
  double blurSigma;
+  VipsPrecision precision;
+  double minAmpl;
  double brightness;
  double saturation;
  int hue;
@@ -195,7 +199,7 @@ struct PipelineBaton {
  std::unordered_map<std::string, std::string> withExif;
  bool withExifMerge;
  int timeoutSeconds;
-  std::unique_ptr<double[]> convKernel;
+  std::vector<double> convKernel;
  int convKernelWidth;
  int convKernelHeight;
  double convKernelScale;
@@ -221,11 +225,13 @@ struct PipelineBaton {
  VipsForeignDzDepth tileDepth;
  std::string tileId;
  std::string tileBasename;
-  std::unique_ptr<double[]> recombMatrix;
+  std::vector<double> recombMatrix;

  PipelineBaton():
    input(nullptr),
    bufferOutLength(0),
+    pageHeightOut(0),
+    pagesOut(0),
    topOffsetPre(-1),
    topOffsetPost(-1),
    channels(0),
--- a/test/fixtures/XCMYK
+++ b/test/fixtures/XCMYK
--- a/test/fixtures/d.png
+++ b/test/fixtures/d.png
--- a/test/fixtures/expected/colourspace.cmyk-to-cmyk-negated.tif
+++ b/test/fixtures/expected/colourspace.cmyk-to-cmyk-negated.tif
--- a/test/fixtures/expected/d-opacity-30.png
+++ b/test/fixtures/expected/d-opacity-30.png
--- a/test/fixtures/expected/flip-and-flop.jpg
+++ b/test/fixtures/expected/flip-and-flop.jpg
--- a/test/fixtures/expected/negate-trans.png
+++ b/test/fixtures/expected/negate-trans.png
--- a/test/fixtures/fogra-0-100-100-0.tif
+++ b/test/fixtures/fogra-0-100-100-0.tif
--- a/test/fixtures/index.js
+++ b/test/fixtures/index.js
@@ -14,29 +14,26 @@ const getPath = function (filename) {

 // Generates a 64-bit-as-binary-string image fingerprint
 // Based on the dHash gradient method - see http://www.hackerfactor.com/blog/index.php?/archives/529-Kind-of-Like-That.html
-const fingerprint = function (image, callback) {
-  sharp(image)
+async function fingerprint (image) {
+  return sharp(image)
    .flatten('gray')
    .greyscale()
    .normalise()
    .resize(9, 8, { fit: sharp.fit.fill })
    .raw()
-    .toBuffer(function (err, data) {
-      if (err) {
-        callback(err);
-      } else {
-        let fingerprint = '';
-        for (let col = 0; col < 8; col++) {
-          for (let row = 0; row < 8; row++) {
-            const left = data[(row * 8) + col];
-            const right = data[(row * 8) + col + 1];
-            fingerprint = fingerprint + (left < right ? '1' : '0');
-          }
+    .toBuffer()
+    .then(function (data) {
+      let fingerprint = '';
+      for (let col = 0; col < 8; col++) {
+        for (let row = 0; row < 8; row++) {
+          const left = data[(row * 8) + col];
+          const right = data[(row * 8) + col + 1];
+          fingerprint = fingerprint + (left < right ? '1' : '0');
        }
-        callback(null, fingerprint);
      }
+      return fingerprint;
    });
-};
+}

 module.exports = {

@@ -102,6 +99,7 @@ module.exports = {
  inputPngTrimSpecificColour16bit: getPath('Flag_of_the_Netherlands-16bit.png'), // convert Flag_of_the_Netherlands.png -depth 16 Flag_of_the_Netherlands-16bit.png
  inputPngTrimSpecificColourIncludeAlpha: getPath('Flag_of_the_Netherlands-alpha.png'), // convert Flag_of_the_Netherlands.png -alpha set -background none -channel A -evaluate multiply 0.5 +channel Flag_of_the_Netherlands-alpha.png
  inputPngUint32Limit: getPath('65536-uint32-limit.png'), // https://alexandre.alapetite.fr/doc-alex/large-image/
+  inputPngWithProPhotoProfile: getPath('prophoto.png'),

  inputWebP: getPath('4.webp'), // http://www.gstatic.com/webp/gallery/4.webp
  inputWebPWithTransparency: getPath('5_webp_a.webp'), // http://www.gstatic.com/webp/gallery3/5_webp_a.webp
@@ -114,6 +112,7 @@ module.exports = {
  inputTiffUncompressed: getPath('uncompressed_tiff.tiff'), // https://code.google.com/archive/p/imagetestsuite/wikis/TIFFTestSuite.wiki file: 0c84d07e1b22b76f24cccc70d8788e4a.tif
  inputTiff8BitDepth: getPath('8bit_depth.tiff'),
  inputTifftagPhotoshop: getPath('tifftag-photoshop.tiff'), // https://github.com/lovell/sharp/issues/1600
+  inputTiffFogra: getPath('fogra-0-100-100-0.tif'), // https://github.com/lovell/sharp/issues/4045

  inputJp2: getPath('relax.jp2'), // https://www.fnordware.com/j2k/relax.jp2
  inputGif: getPath('Crash_test.gif'), // http://upload.wikimedia.org/wikipedia/commons/e/e3/Crash_test.gif
@@ -138,6 +137,7 @@ module.exports = {

  testPattern: getPath('test-pattern.png'),

+  inputPngWithTransparent: getPath('d.png'),
  // Path for tests requiring human inspection
  path: getPath,

@@ -149,46 +149,44 @@ module.exports = {
  // Verify similarity of expected vs actual images via fingerprint
  // Specify distance threshold using `options={threshold: 42}`, default
  // `threshold` is 5;
-  assertSimilar: function (expectedImage, actualImage, options, callback) {
+  assertSimilar: async function (expectedImage, actualImage, options, callback) {
    if (typeof options === 'function') {
      callback = options;
      options = {};
    }
-
-    if (typeof options === 'undefined' && options === null) {
+    if (typeof options === 'undefined' || options === null) {
      options = {};
    }
-
    if (options.threshold === null || typeof options.threshold === 'undefined') {
      options.threshold = 5; // ~7% threshold
    }
-
    if (typeof options.threshold !== 'number') {
      throw new TypeError('`options.threshold` must be a number');
    }

-    if (typeof callback !== 'function') {
-      throw new TypeError('`callback` must be a function');
+    try {
+      const [expectedFingerprint, actualFingerprint] = await Promise.all([
+        fingerprint(expectedImage),
+        fingerprint(actualImage)
+      ]);
+      let distance = 0;
+      for (let i = 0; i < 64; i++) {
+        if (expectedFingerprint[i] !== actualFingerprint[i]) {
+          distance++;
+        }
+      }
+      if (distance > options.threshold) {
+        throw new Error(`Expected maximum similarity distance: ${options.threshold}. Actual: ${distance}.`);
+      }
+    } catch (err) {
+      if (callback) {
+        return callback(err);
+      }
+      throw err;
+    }
+    if (callback) {
+      callback();
    }
-
-    fingerprint(expectedImage, function (err, expectedFingerprint) {
-      if (err) return callback(err);
-      fingerprint(actualImage, function (err, actualFingerprint) {
-        if (err) return callback(err);
-        let distance = 0;
-        for (let i = 0; i < 64; i++) {
-          if (expectedFingerprint[i] !== actualFingerprint[i]) {
-            distance++;
-          }
-        }
-
-        if (distance > options.threshold) {
-          return callback(new Error('Expected maximum similarity distance: ' + options.threshold + '. Actual: ' + distance + '.'));
-        }
-
-        callback();
-      });
-    });
  },

  assertMaxColourDistance: function (actualImagePath, expectedImagePath, acceptedDistance) {
--- a/test/fixtures/prophoto.png
+++ b/test/fixtures/prophoto.png
--- a/test/types/sharp.test-d.ts
+++ b/test/types/sharp.test-d.ts
@@ -59,6 +59,12 @@ sharp('input.jpg')

 sharp('input.jpg').resize({ width: 300 }).blur(false).blur(true).toFile('output.jpg');

+sharp().blur();
+sharp().blur(1);
+sharp().blur({ sigma: 1 });
+sharp().blur({ sigma: 1, precision: 'approximate' });
+sharp().blur({ sigma: 1, minAmplitude: 0.8 });
+
 sharp({
  create: {
    width: 300,
@@ -295,6 +301,13 @@ sharp('input.gif')
    [0.2392, 0.4696, 0.0912],
  ])

+  .recomb([
+    [1,0,0,0],
+    [0,1,0,0],
+    [0,0,1,0],
+    [0,0,0,1],
+  ])
+
  .modulate({ brightness: 2 })
  .modulate({ hue: 180 })
  .modulate({ lightness: 10 })
@@ -680,3 +693,24 @@ sharp(input)
  .keepIccProfile()
  .withIccProfile('filename')
  .withIccProfile('filename', { attach: false });
+
+// Added missing types for OverlayOptions
+// https://github.com/lovell/sharp/pull/4048
+sharp(input).composite([
+  {
+    input: 'image.gif', 
+    animated: true, 
+    limitInputPixels: 536805378, 
+    density: 144, 
+    failOn: "warning"
+  }
+])
+sharp(input).composite([
+  {
+    input: 'image.png',  
+    animated: false,
+    limitInputPixels: 178935126, 
+    density: 72, 
+    failOn: "truncated"
+  }
+])
--- a/test/unit/blur.js
+++ b/test/unit/blur.js
@@ -35,6 +35,19 @@ describe('Blur', function () {
      });
  });

+  it('specific options.sigma 10', function (done) {
+    sharp(fixtures.inputJpg)
+      .resize(320, 240)
+      .blur({ sigma: 10 })
+      .toBuffer(function (err, data, info) {
+        if (err) throw err;
+        assert.strictEqual('jpeg', info.format);
+        assert.strictEqual(320, info.width);
+        assert.strictEqual(240, info.height);
+        fixtures.assertSimilar(fixtures.expected('blur-10.jpg'), data, done);
+      });
+  });
+
  it('specific radius 0.3', function (done) {
    sharp(fixtures.inputJpg)
      .resize(320, 240)
@@ -91,4 +104,54 @@ describe('Blur', function () {
          });
      });
  });
+
+  it('invalid precision', function () {
+    assert.throws(function () {
+      sharp(fixtures.inputJpg).blur({ sigma: 1, precision: 'invalid' });
+    }, /Expected one of: integer, float, approximate for precision but received invalid of type string/);
+  });
+
+  it('invalid minAmplitude', function () {
+    assert.throws(function () {
+      sharp(fixtures.inputJpg).blur({ sigma: 1, minAmplitude: 0 });
+    }, /Expected number between 0.001 and 1 for minAmplitude but received 0 of type number/);
+
+    assert.throws(function () {
+      sharp(fixtures.inputJpg).blur({ sigma: 1, minAmplitude: 1.01 });
+    }, /Expected number between 0.001 and 1 for minAmplitude but received 1.01 of type number/);
+  });
+
+  it('specific radius 10 and precision approximate', async () => {
+    const approximate = await sharp(fixtures.inputJpg)
+      .resize(320, 240)
+      .blur({ sigma: 10, precision: 'approximate' })
+      .toBuffer();
+    const integer = await sharp(fixtures.inputJpg)
+      .resize(320, 240)
+      .blur(10)
+      .toBuffer();
+
+    assert.notDeepEqual(approximate, integer);
+    await fixtures.assertSimilar(fixtures.expected('blur-10.jpg'), approximate);
+  });
+
+  it('specific radius 10 and minAmplitude 0.01', async () => {
+    const minAmplitudeLow = await sharp(fixtures.inputJpg)
+      .resize(320, 240)
+      .blur({ sigma: 10, minAmplitude: 0.01 })
+      .toBuffer();
+    const minAmplitudeDefault = await sharp(fixtures.inputJpg)
+      .resize(320, 240)
+      .blur(10)
+      .toBuffer();
+
+    assert.notDeepEqual(minAmplitudeLow, minAmplitudeDefault);
+    await fixtures.assertSimilar(fixtures.expected('blur-10.jpg'), minAmplitudeLow);
+  });
+
+  it('options.sigma is required if options object is passed', function () {
+    assert.throws(function () {
+      sharp(fixtures.inputJpg).blur({ precision: 'invalid' });
+    }, /Expected number between 0.3 and 1000 for options.sigma but received undefined of type undefined/);
+  });
 });
--- a/test/unit/colourspace.js
+++ b/test/unit/colourspace.js
@@ -106,6 +106,43 @@ describe('Colour space conversion', function () {
    );
  });

+  it('CMYK profile to CMYK profile conversion using perceptual intent', async () => {
+    const data = await sharp(fixtures.inputTiffFogra)
+      .resize(320, 240)
+      .toColourspace('cmyk')
+      .pipelineColourspace('cmyk')
+      .withIccProfile(fixtures.path('XCMYK 2017.icc'))
+      .raw()
+      .toBuffer();
+
+    const [c, m, y, k] = data;
+    assert.deepStrictEqual(
+      { c, m, y, k },
+      { c: 1, m: 239, y: 227, k: 5 }
+    );
+  });
+
+  it('CMYK profile to CMYK profile with negate', (done) => {
+    sharp(fixtures.inputTiffFogra)
+      .resize(320, 240)
+      .toColourspace('cmyk')
+      .pipelineColourspace('cmyk')
+      .withIccProfile(fixtures.path('XCMYK 2017.icc'))
+      .negate()
+      .toBuffer(function (err, data, info) {
+        if (err) throw err;
+        assert.strictEqual('tiff', info.format);
+        assert.strictEqual(320, info.width);
+        assert.strictEqual(240, info.height);
+        fixtures.assertSimilar(
+          fixtures.expected('colourspace.cmyk-to-cmyk-negated.tif'),
+          data,
+          { threshold: 0 },
+          done
+        );
+      });
+  });
+
  it('From sRGB with RGB16 pipeline, resize with gamma, to sRGB', function (done) {
    sharp(fixtures.inputPngGradients)
      .pipelineColourspace('rgb16')
--- a/test/unit/extend.js
+++ b/test/unit/extend.js
@@ -73,20 +73,6 @@ describe('Extend', function () {
        });
    });

-    it('extend top with mirroring uses ordered read', async () => {
-      const data = await sharp(fixtures.inputJpg)
-        .extend({
-          extendWith: 'mirror',
-          top: 1
-        })
-        .png({ compressionLevel: 0 })
-        .toBuffer();
-
-      const { width, height } = await sharp(data).metadata();
-      assert.strictEqual(2725, width);
-      assert.strictEqual(2226, height);
-    });
-
    it(`extend sides unequally with RGBA (${extendWith})`, function (done) {
      sharp(fixtures.inputPngWithTransparency16bit)
        .resize(120)
@@ -127,6 +113,39 @@ describe('Extend', function () {
    });
  });

+  it('extend top with mirroring uses ordered read', async () => {
+    const data = await sharp(fixtures.inputJpg)
+      .extend({
+        extendWith: 'mirror',
+        top: 1
+      })
+      .png({ compressionLevel: 0 })
+      .toBuffer();
+
+    const { width, height } = await sharp(data).metadata();
+    assert.strictEqual(2725, width);
+    assert.strictEqual(2226, height);
+  });
+
+  it('multi-page extend uses ordered read', async () => {
+    const multiPageTiff = await sharp(fixtures.inputGifAnimated, { animated: true })
+      .resize({ width: 8, height: 48 })
+      .tiff()
+      .toBuffer();
+
+    const data = await sharp(multiPageTiff, { pages: -1 })
+      .extend({
+        background: 'red',
+        top: 1
+      })
+      .png({ compressionLevel: 0 })
+      .toBuffer();
+
+    const { width, height } = await sharp(data).metadata();
+    assert.strictEqual(8, width);
+    assert.strictEqual(1470, height);
+  });
+
  it('missing parameter fails', function () {
    assert.throws(function () {
      sharp().extend();
--- a/test/unit/gif.js
+++ b/test/unit/gif.js
@@ -39,7 +39,7 @@ describe('GIF input', () => {
      })
  );

-  it('Animated GIF first page to PNG', () =>
+  it('Animated GIF first page to non-animated GIF', () =>
    sharp(fixtures.inputGifAnimated)
      .toBuffer({ resolveWithObject: true })
      .then(({ data, info }) => {
@@ -49,10 +49,12 @@ describe('GIF input', () => {
        assert.strictEqual(80, info.width);
        assert.strictEqual(80, info.height);
        assert.strictEqual(4, info.channels);
+        assert.strictEqual(undefined, info.pages);
+        assert.strictEqual(undefined, info.pageHeight);
      })
  );

-  it('Animated GIF all pages to PNG "toilet roll"', () =>
+  it('Animated GIF round trip', () =>
    sharp(fixtures.inputGifAnimated, { pages: -1 })
      .toBuffer({ resolveWithObject: true })
      .then(({ data, info }) => {
@@ -62,6 +64,8 @@ describe('GIF input', () => {
        assert.strictEqual(80, info.width);
        assert.strictEqual(2400, info.height);
        assert.strictEqual(4, info.channels);
+        assert.strictEqual(30, info.pages);
+        assert.strictEqual(80, info.pageHeight);
      })
  );

--- a/test/unit/libvips.js
+++ b/test/unit/libvips.js
@@ -66,6 +66,23 @@ describe('libvips binaries', function () {

      delete process.env.SHARP_IGNORE_GLOBAL_LIBVIPS;
    });
+    it('useGlobalLibvips can be forced via an env var', function () {
+      process.env.SHARP_FORCE_GLOBAL_LIBVIPS = 1;
+
+      const useGlobalLibvips = libvips.useGlobalLibvips();
+      assert.strictEqual(true, useGlobalLibvips);
+
+      let logged = false;
+      const logger = function (message) {
+        assert.strictEqual(message, 'Detected SHARP_FORCE_GLOBAL_LIBVIPS, skipping search for globally-installed libvips');
+        logged = true;
+      };
+      const useGlobalLibvipsWithLogger = libvips.useGlobalLibvips(logger);
+      assert.strictEqual(true, useGlobalLibvipsWithLogger);
+      assert.strictEqual(true, logged);
+
+      delete process.env.SHARP_FORCE_GLOBAL_LIBVIPS;
+    });
  });

  describe('Build time platform detection', () => {
@@ -162,7 +179,7 @@ describe('libvips binaries', function () {
      process.env.npm_config_arch = 's390x';
      process.env.npm_config_libc = '';
      const locatorHash = libvips.yarnLocator();
-      assert.strictEqual(locatorHash, '45978c229d');
+      assert.strictEqual(locatorHash, 'c4ea54fdc1');
      delete process.env.npm_config_platform;
      delete process.env.npm_config_arch;
      delete process.env.npm_config_libc;
--- a/test/unit/metadata.js
+++ b/test/unit/metadata.js
@@ -154,6 +154,31 @@ describe('Image metadata', function () {
    });
  });

+  it('PNG with comment', function (done) {
+    sharp(fixtures.inputPngTestJoinChannel).metadata(function (err, metadata) {
+      if (err) throw err;
+      assert.strictEqual('png', metadata.format);
+      assert.strictEqual('undefined', typeof metadata.size);
+      assert.strictEqual(320, metadata.width);
+      assert.strictEqual(240, metadata.height);
+      assert.strictEqual('b-w', metadata.space);
+      assert.strictEqual(1, metadata.channels);
+      assert.strictEqual('uchar', metadata.depth);
+      assert.strictEqual(72, metadata.density);
+      assert.strictEqual('undefined', typeof metadata.chromaSubsampling);
+      assert.strictEqual(false, metadata.isProgressive);
+      assert.strictEqual(false, metadata.hasProfile);
+      assert.strictEqual(false, metadata.hasAlpha);
+      assert.strictEqual('undefined', typeof metadata.orientation);
+      assert.strictEqual('undefined', typeof metadata.exif);
+      assert.strictEqual('undefined', typeof metadata.icc);
+      assert.strictEqual(1, metadata.comments.length);
+      assert.strictEqual('Comment', metadata.comments[0].keyword);
+      assert.strictEqual('Created with GIMP', metadata.comments[0].text);
+      done();
+    });
+  });
+
  it('Transparent PNG', function (done) {
    sharp(fixtures.inputPngWithTransparency).metadata(function (err, metadata) {
      if (err) throw err;
@@ -576,6 +601,17 @@ describe('Image metadata', function () {
    assert.strictEqual(description, 'Generic RGB Profile');
  });

+  it('keep existing ICC profile, avoid colour transform', async () => {
+    const [r, g, b] = await sharp(fixtures.inputPngWithProPhotoProfile)
+      .keepIccProfile()
+      .raw()
+      .toBuffer();
+
+    assert.strictEqual(r, 131);
+    assert.strictEqual(g, 141);
+    assert.strictEqual(b, 192);
+  });
+
  it('keep existing CMYK ICC profile', async () => {
    const data = await sharp(fixtures.inputJpgWithCmykProfile)
      .pipelineColourspace('cmyk')
@@ -616,13 +652,13 @@ describe('Image metadata', function () {
      .png()
      .withIccProfile(fixtures.path('invalid-illuminant.icc'));

-    let warningEmitted = '';
+    const warningsEmitted = [];
    img.on('warning', (warning) => {
-      warningEmitted = warning;
+      warningsEmitted.push(warning);
    });

    const data = await img.toBuffer();
-    assert.strictEqual('Invalid profile', warningEmitted);
+    assert.strict(warningsEmitted.includes('Invalid profile'));

    const metadata = await sharp(data).metadata();
    assert.strictEqual(3, metadata.channels);
--- a/test/unit/recomb.js
+++ b/test/unit/recomb.js
@@ -121,6 +121,29 @@ describe('Recomb', function () {
      });
  });

+  it('applies opacity 30% to the image', function (done) {
+    const output = fixtures.path('output.recomb-opacity.png');
+    sharp(fixtures.inputPngWithTransparent)
+      .recomb([
+        [1, 0, 0, 0],
+        [0, 1, 0, 0],
+        [0, 0, 1, 0],
+        [0, 0, 0, 0.3]
+      ])
+      .toFile(output, function (err, info) {
+        if (err) throw err;
+        assert.strictEqual('png', info.format);
+        assert.strictEqual(48, info.width);
+        assert.strictEqual(48, info.height);
+        fixtures.assertMaxColourDistance(
+          output,
+          fixtures.expected('d-opacity-30.png'),
+          17
+        );
+        done();
+      });
+  });
+
  describe('invalid matrix specification', function () {
    it('missing', function () {
      assert.throws(function () {
--- a/test/unit/rotate.js
+++ b/test/unit/rotate.js
@@ -417,6 +417,7 @@ describe('Rotation', function () {
  it('Flip and flop', function (done) {
    sharp(fixtures.inputJpg)
      .resize(320)
+      .flip()
      .flop()
      .toBuffer(function (err, data, info) {
        if (err) throw err;
--- a/test/unit/text.js
+++ b/test/unit/text.js
@@ -228,26 +228,34 @@ describe('Text to image', function () {
    });
  });

-  it('bad width input', function () {
-    assert.throws(function () {
-      sharp({
-        text: {
-          text: 'text',
-          width: 'bad'
-        }
-      });
-    });
+  it('invalid width', () => {
+    assert.throws(
+      () => sharp({ text: { text: 'text', width: 'bad' } }),
+      /Expected positive integer for text\.width but received bad of type string/
+    );
+    assert.throws(
+      () => sharp({ text: { text: 'text', width: 0.1 } }),
+      /Expected positive integer for text\.width but received 0.1 of type number/
+    );
+    assert.throws(
+      () => sharp({ text: { text: 'text', width: -1 } }),
+      /Expected positive integer for text\.width but received -1 of type number/
+    );
  });

-  it('bad height input', function () {
-    assert.throws(function () {
-      sharp({
-        text: {
-          text: 'text',
-          height: 'bad'
-        }
-      });
-    });
+  it('invalid height', () => {
+    assert.throws(
+      () => sharp({ text: { text: 'text', height: 'bad' } }),
+      /Expected positive integer for text\.height but received bad of type string/
+    );
+    assert.throws(
+      () => sharp({ text: { text: 'text', height: 0.1 } }),
+      /Expected positive integer for text\.height but received 0.1 of type number/
+    );
+    assert.throws(
+      () => sharp({ text: { text: 'text', height: -1 } }),
+      /Expected positive integer for text\.height but received -1 of type number/
+    );
  });

  it('bad align input', function () {
@@ -272,15 +280,19 @@ describe('Text to image', function () {
    });
  });

-  it('bad dpi input', function () {
-    assert.throws(function () {
-      sharp({
-        text: {
-          text: 'text',
-          dpi: -10
-        }
-      });
-    });
+  it('invalid dpi', () => {
+    assert.throws(
+      () => sharp({ text: { text: 'text', dpi: 'bad' } }),
+      /Expected integer between 1 and 1000000 for text\.dpi but received bad of type string/
+    );
+    assert.throws(
+      () => sharp({ text: { text: 'text', dpi: 0.1 } }),
+      /Expected integer between 1 and 1000000 for text\.dpi but received 0.1 of type number/
+    );
+    assert.throws(
+      () => sharp({ text: { text: 'text', dpi: -1 } }),
+      /Expected integer between 1 and 1000000 for text\.dpi but received -1 of type number/
+    );
  });

  it('bad rgba input', function () {
@@ -294,15 +306,19 @@ describe('Text to image', function () {
    });
  });

-  it('bad spacing input', function () {
-    assert.throws(function () {
-      sharp({
-        text: {
-          text: 'text',
-          spacing: 'number expected'
-        }
-      });
-    });
+  it('invalid spacing', () => {
+    assert.throws(
+      () => sharp({ text: { text: 'text', spacing: 'bad' } }),
+      /Expected integer between -1000000 and 1000000 for text\.spacing but received bad of type string/
+    );
+    assert.throws(
+      () => sharp({ text: { text: 'text', spacing: 0.1 } }),
+      /Expected integer between -1000000 and 1000000 for text\.spacing but received 0.1 of type number/
+    );
+    assert.throws(
+      () => sharp({ text: { text: 'text', spacing: -1000001 } }),
+      /Expected integer between -1000000 and 1000000 for text\.spacing but received -1000001 of type number/
+    );
  });

  it('only height or dpi not both', function () {
Author	SHA1	Message	Date
Lovell Fuller	fc32e0bd3f	Release v0.33.5	2024-08-16 13:29:19 +01:00
Lovell Fuller	0546e48467	Docs: changelog entry for #4191	2024-08-14 16:03:08 +01:00
David Vaness	ab65b7a0f1	TypeScript: chromaSubsampling can be undefined (#4191 )	2024-08-14 12:59:10 +01:00
Lovell Fuller	2474bd4163	Prerelease v0.33.5-rc.1	2024-08-14 08:49:14 +01:00
Lovell Fuller	ff2e689d35	Remove yarn v1 specifics from help text	2024-08-14 08:48:12 +01:00
Lovell Fuller	6327f13717	CI: Add yarn v1 to packaging tests	2024-08-13 18:39:54 +01:00
Lovell Fuller	f1e69a218e	Prerelease v0.33.5-rc.0	2024-08-13 15:42:49 +01:00
Lovell Fuller	3c14dbb21e	Minimise use of `engines` property to improve yarn v1 support	2024-08-13 09:37:00 +01:00
Lovell Fuller	82cebc31d0	Upgrade to libvips v8.15.3 for Linux ARMv6 Previous version erroneously targetted ARMv7	2024-08-13 08:54:05 +01:00
Lovell Fuller	ad36fa0605	Ensure emnapiInit function is exported Prevents latest emscripten optimising it away	2024-08-12 16:27:33 +01:00
Lovell Fuller	de42667767	Upgrade to libvips v8.15.3	2024-08-12 13:19:10 +01:00
Lovell Fuller	2eb03b0049	Ensure keepIccProfile avoids ICC transform #4186	2024-08-11 09:44:53 +01:00
Lovell Fuller	f7ed9b7fb6	Tests: reduce flakiness of withIccProfile warning check	2024-07-24 08:02:16 +01:00
Lovell Fuller	7fbb988180	Bump deps	2024-07-24 07:59:55 +01:00
Lovell Fuller	490210fc60	Docs: changelog for #4172	2024-07-23 11:37:30 +01:00
Marcos Casagrande	735fee74db	Expose optional minAmplitude parameter of blur operation (#4172 )	2024-07-23 11:31:11 +01:00
Lovell Fuller	67a5854b89	Docs: remove duplicate contributor	2024-07-20 20:02:11 +01:00
Lovell Fuller	f128ebdbd4	Tests: assertSimilar support for Promise and callback	2024-07-20 15:10:04 +01:00
Lovell Fuller	2672de2480	Docs: changelog and credit for #4168	2024-07-20 14:04:53 +01:00
Marcos Casagrande	67a4592756	Expose optional precision parameter of blur operation (#4168 )	2024-07-20 13:53:23 +01:00
Lovell Fuller	10c6f474d9	Docs: changelog and credit for #4157	2024-07-18 18:29:38 +01:00
Nathan Keynes	d642108be2	Expose PNG metadata comments (#4157 )	2024-07-18 18:08:03 +01:00
Lovell Fuller	c2a024101b	CI: Upgrade Python to at least 3.8 - Latest node-gyp requires 3.8 - Python 3.7 is EOL - Minimum glibc requirement for linux-arm will now be 2.31 (Pi OS 'Legacy' provides Debian 11 with glibc 2.31)	2024-07-17 09:12:50 +01:00
Lovell Fuller	2f0bbebfc9	Refactor conv op to use slightly safer std::vector Inspired by similar change to recomb op in commit `60c5c50`	2024-07-05 21:34:24 +01:00
Denice	60c5c5083d	Add support to recomb operation for 4x4 matrices	2024-07-05 15:31:51 +01:00
Lovell Fuller	eab7dc1b49	Bump devDeps	2024-07-01 10:16:15 +01:00
Lovell Fuller	5c7f37a0e0	Issue template: request people try newer npm first	2024-07-01 10:16:02 +01:00
Lovell Fuller	ae06f46914	Ensure sharp.format.heif is AVIF-only for prebuilt binaries	2024-06-19 09:40:02 +01:00
Lovell Fuller	9c05ea8dd2	Add pageHeight and pages to anim output response #3411	2024-06-17 16:32:49 +01:00
Don Denton	472aaf3311	Tests: ensure combination of flip and flop is covered (#4123 )	2024-06-04 21:34:18 +01:00
Richard Hillmann	56fae3eda1	Ensure SHARP_FORCE_GLOBAL_LIBVIPS option works correctly #4111 Allows the install/check script to inject a logger function, keeping its use within binding.gyp free of additional output. Co-authored-by: Lovell Fuller <github@lovell.info>	2024-05-24 17:45:39 +01:00
Lovell Fuller	cc96c21e42	CI: Upgrade to macOS 12 (as 11 will be removed soon)	2024-05-21 11:40:11 +01:00
Lovell Fuller	1d344888ec	Bump dep: emnapi	2024-05-21 11:39:41 +01:00
Lovell Fuller	bee235ee76	Docs: fix CSP	2024-05-21 11:39:08 +01:00
Lovell Fuller	19d0e272e6	Release v0.33.4	2024-05-16 12:48:29 +01:00
Lovell Fuller	16b764f1c1	Prerelease v0.33.4-rc.0	2024-05-16 12:16:41 +01:00
Lovell Fuller	1593ee3838	Bump devDeps	2024-05-16 12:15:49 +01:00
Lovell Fuller	668b5ba8bc	Docs: changelog and credit for #4096	2024-05-14 16:59:20 +01:00
Adriaan Meuris	29336f4cc7	Ensure negate op occurs after profile conversion (#4096 ) - Adds CMYK to CMYK profile conversion tests - Fixes existing greyscale plus alpha test expectation	2024-05-13 12:23:11 +01:00
Lovell Fuller	b5fddd7c5e	Install: log node-addon-api version if available	2024-05-10 10:43:15 +01:00
Lovell Fuller	da655a1859	Reduce default concurrency for musl thread over-subscription https://github.com/lovell/sharp-libvips/issues/229	2024-04-30 19:23:44 +01:00
Lovell Fuller	93c615d39f	Bump devDeps	2024-04-30 19:23:36 +01:00
Lovell Fuller	f325dc3ec9	Refactor to use C++ boolean literals rather than macros	2024-04-30 19:23:31 +01:00
Skyf0l	0fde71c783	Ensure all contributor email addresses are valid (#4088 )	2024-04-28 18:17:44 +01:00
Lovell Fuller	9c8fbaa1cc	Issue template: fix markdown links from `a9e662e`	2024-04-25 11:31:45 +01:00
Lovell Fuller	a9e662e612	Issue template: add a couple of the most commonly-reported problems This should allow more people to help themselves and prevent extraneous issues from being opened.	2024-04-25 11:25:14 +01:00
Lovell Fuller	ba843002be	Docs: use libc flag for npm Linux cross-installs	2024-04-24 08:30:50 +01:00
Lovell Fuller	7f3d452bc5	Docs: changelog and credit for #4074	2024-04-19 15:21:21 +01:00
Kleis Auke Wolthuizen	aa8bc19362	Simplify StaySequential operation (#4074 )	2024-04-19 14:47:49 +01:00
Lovell Fuller	36e60bf040	CI: Upgrade linux-s390x to Debian 11 Debian LTS does not include s390x and Debian 10 is EOL so this platform will now require a minimum version of glibc 2.31.	2024-04-19 13:13:48 +01:00
Lovell Fuller	a1309aa3b8	Tighten constructor text property validation #4071	2024-04-19 12:48:47 +01:00
Lovell Fuller	3e8a0fc522	Ensure only one StaySequential operation per pipeline This should reduce memory consumption for more complex pipelines that combine multiple operations without sequential access support e.g. flip and Gaussian blur.	2024-04-19 11:27:54 +01:00
Lovell Fuller	397ee492d9	Ensure extend op is sequential for multi-page TIFF #4069	2024-04-18 11:05:04 +01:00
Lovell Fuller	52b9dc0f63	Docs: add a few more stop-words	2024-04-11 10:31:38 +01:00
Lovell Fuller	a715c73fc2	Docs: remove GA, allow for possible use of CF	2024-04-11 10:23:27 +01:00
Lovell Fuller	579cf93030	Install: advanced option to force global libvips #4060	2024-04-10 09:25:53 +01:00
Lovell Fuller	f67228e5ea	Remove experimental status from pipelineColourspace	2024-04-09 22:32:17 +01:00
Lovell Fuller	6257994746	Expose bilinear resize kernel and improve docs #4061	2024-04-09 22:21:52 +01:00
Lovell Fuller	7950fc0ea3	Docs: changelog entry for #4048	2024-04-02 19:23:11 +01:00
Lovell Fuller	fc93ab3b82	Bump devDeps	2024-04-02 19:22:42 +01:00
ike	0981b24f60	TypeScript: add missing definitions for OverlayOptions (#4048 )	2024-04-02 14:42:10 +01:00
Lovell Fuller	02fd565476	CI: bump write-file-action	2024-03-29 13:01:51 +00:00
Lovell Fuller	e55bb93b10	Bump devDeps	2024-03-29 13:01:32 +00:00
Lovell Fuller	55466f122c	Release v0.33.3	2024-03-23 11:58:44 +00:00