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Default PNG output to adaptiveFiltering=false, compressionLevel=9

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PNG is mostly used for logos and line art, so these defaults will
produce the smallest files for most output most of the time.
This commit is contained in:
Lovell Fuller
2017-10-01 18:16:31 +01:00
parent 7b6c80327e
commit 99076edc89
5 changed files with 33 additions and 6 deletions
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4
lib/constructor.js
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@@ -186,8 +186,8 @@ const Sharp = function (input, options) {
jpegOvershootDeringing: false,
jpegOptimiseScans: false,
pngProgressive: false,
pngCompressionLevel: 6,
pngAdaptiveFiltering: true,
pngCompressionLevel: 9,
pngAdaptiveFiltering: false,
webpQuality: 80,
webpAlphaQuality: 100,
webpLossless: false,

4
lib/output.js
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@@ -148,8 +148,8 @@ function jpeg (options) {
* Use these PNG options for output image.
* @param {Object} [options]
* @param {Boolean} [options.progressive=false] - use progressive (interlace) scan
* @param {Number} [options.compressionLevel=6] - zlib compression level
* @param {Boolean} [options.adaptiveFiltering=true] - use adaptive row filtering
* @param {Number} [options.compressionLevel=9] - zlib compression level, 0-9
* @param {Boolean} [options.adaptiveFiltering=false] - use adaptive row filtering
* @param {Boolean} [options.force=true] - force PNG output, otherwise attempt to use input format
* @returns {Sharp}
* @throws {Error} Invalid options