diff --git a/lib/input.js b/lib/input.js
index 26aa2f54..436bfb75 100644
--- a/lib/input.js
+++ b/lib/input.js
@@ -30,7 +30,7 @@ const inputStreamParameters = [
   // Format-specific
   'jp2', 'openSlide', 'pdf', 'raw', 'svg', 'tiff',
   // Deprecated
-  'failOnError', 'level', 'pdfBackground', 'subifd'
+  'failOnError', 'openSlideLevel', 'pdfBackground', 'tiffSubifd'
 ];
 
 /**
@@ -246,14 +246,14 @@ function _createInputDescriptor (input, inputOptions, containerOptions) {
     // OpenSlide specific options
     if (is.object(inputOptions.openSlide) && is.defined(inputOptions.openSlide.level)) {
       if (is.integer(inputOptions.openSlide.level) && is.inRange(inputOptions.openSlide.level, 0, 256)) {
-        inputDescriptor.level = inputOptions.openSlide.level;
+        inputDescriptor.openSlideLevel = inputOptions.openSlide.level;
       } else {
         throw is.invalidParameterError('openSlide.level', 'integer between 0 and 256', inputOptions.openSlide.level);
       }
     } else if (is.defined(inputOptions.level)) {
       // Deprecated
       if (is.integer(inputOptions.level) && is.inRange(inputOptions.level, 0, 256)) {
-        inputDescriptor.level = inputOptions.level;
+        inputDescriptor.openSlideLevel = inputOptions.level;
       } else {
         throw is.invalidParameterError('level', 'integer between 0 and 256', inputOptions.level);
       }
@@ -261,14 +261,14 @@ function _createInputDescriptor (input, inputOptions, containerOptions) {
     // TIFF specific options
     if (is.object(inputOptions.tiff) && is.defined(inputOptions.tiff.subifd)) {
       if (is.integer(inputOptions.tiff.subifd) && is.inRange(inputOptions.tiff.subifd, -1, 100000)) {
-        inputDescriptor.subifd = inputOptions.tiff.subifd;
+        inputDescriptor.tiffSubifd = inputOptions.tiff.subifd;
       } else {
         throw is.invalidParameterError('tiff.subifd', 'integer between -1 and 100000', inputOptions.tiff.subifd);
       }
     } else if (is.defined(inputOptions.subifd)) {
       // Deprecated
       if (is.integer(inputOptions.subifd) && is.inRange(inputOptions.subifd, -1, 100000)) {
-        inputDescriptor.subifd = inputOptions.subifd;
+        inputDescriptor.tiffSubifd = inputOptions.subifd;
       } else {
         throw is.invalidParameterError('subifd', 'integer between -1 and 100000', inputOptions.subifd);
       }
diff --git a/src/common.cc b/src/common.cc
index be285327..e465dc2f 100644
--- a/src/common.cc
+++ b/src/common.cc
@@ -109,12 +109,12 @@ namespace sharp {
       descriptor->svgHighBitdepth = AttrAsBool(input, "svgHighBitdepth");
     }
     // Multi-level input (OpenSlide)
-    if (HasAttr(input, "level")) {
-      descriptor->level = AttrAsUint32(input, "level");
+    if (HasAttr(input, "openSlideLevel")) {
+      descriptor->openSlideLevel = AttrAsUint32(input, "openSlideLevel");
     }
     // subIFD (OME-TIFF)
     if (HasAttr(input, "subifd")) {
-      descriptor->subifd = AttrAsInt32(input, "subifd");
+      descriptor->tiffSubifd = AttrAsInt32(input, "tiffSubifd");
     }
     // // PDF background color
     if (HasAttr(input, "pdfBackground")) {
@@ -404,31 +404,34 @@ namespace sharp {
     if (descriptor->unlimited && ImageTypeSupportsUnlimited(imageType)) {
       option->set("unlimited", true);
     }
-    if (imageType == ImageType::SVG || imageType == ImageType::PDF) {
-      option->set("dpi", descriptor->density);
-    }
-    if (imageType == ImageType::MAGICK) {
-      option->set("density", std::to_string(descriptor->density).data());
-    }
     if (ImageTypeSupportsPage(imageType)) {
       option->set("n", descriptor->pages);
       option->set("page", descriptor->page);
     }
-    if (imageType == ImageType::SVG) {
-      option->set("stylesheet", descriptor->svgStylesheet.data());
-      option->set("high_bitdepth", descriptor->svgHighBitdepth);
-    }
-    if (imageType == ImageType::OPENSLIDE) {
-      option->set("level", descriptor->level);
-    }
-    if (imageType == ImageType::TIFF) {
-      option->set("subifd", descriptor->subifd);
-    }
-    if (imageType == ImageType::PDF) {
-      option->set("background", descriptor->pdfBackground);
-    }
-    if (imageType == ImageType::JP2) {
-      option->set("oneshot", descriptor->jp2Oneshot);
+    switch (imageType) {
+      case ImageType::SVG:
+        option->set("dpi", descriptor->density)
+              ->set("stylesheet", descriptor->svgStylesheet.data())
+              ->set("high_bitdepth", descriptor->svgHighBitdepth);
+        break;
+      case ImageType::TIFF:
+        option->set("tiffSubifd", descriptor->tiffSubifd);
+        break;
+      case ImageType::PDF:
+        option->set("dpi", descriptor->density)
+              ->set("background", descriptor->pdfBackground);
+        break;
+      case ImageType::OPENSLIDE:
+        option->set("openSlideLevel", descriptor->openSlideLevel);
+        break;
+      case ImageType::JP2:
+        option->set("oneshot", descriptor->jp2Oneshot);
+        break;
+      case ImageType::MAGICK:
+        option->set("density", std::to_string(descriptor->density).data());
+        break;
+      default:
+        break;
     }
     return option;
   }
diff --git a/src/common.h b/src/common.h
index 37955cf7..e199942d 100644
--- a/src/common.h
+++ b/src/common.h
@@ -50,8 +50,6 @@ namespace sharp {
     bool rawPremultiplied;
     int pages;
     int page;
-    int level;
-    int subifd;
     int createChannels;
     int createWidth;
     int createHeight;
@@ -79,6 +77,8 @@ namespace sharp {
     VipsAlign joinValign;
     std::string svgStylesheet;
     bool svgHighBitdepth;
+    int tiffSubifd;
+    int openSlideLevel;
     std::vector<double> pdfBackground;
     bool jp2Oneshot;
 
@@ -100,8 +100,6 @@ namespace sharp {
       rawPremultiplied(false),
       pages(1),
       page(0),
-      level(0),
-      subifd(-1),
       createChannels(0),
       createWidth(0),
       createHeight(0),
@@ -124,6 +122,8 @@ namespace sharp {
       joinHalign(VIPS_ALIGN_LOW),
       joinValign(VIPS_ALIGN_LOW),
       svgHighBitdepth(false),
+      tiffSubifd(-1),
+      openSlideLevel(0),
       pdfBackground{ 255.0, 255.0, 255.0, 255.0 },
       jp2Oneshot(false) {}
   };