diff --git a/image/DecoderFactory.cpp b/image/DecoderFactory.cpp
index d8159a063a53..4786b6931e7b 100644
--- a/image/DecoderFactory.cpp
+++ b/image/DecoderFactory.cpp
@@ -108,6 +108,7 @@ DecoderFactory::GetDecoder(DecoderType aType,
 DecoderFactory::CreateDecoder(DecoderType aType,
                               NotNull<RasterImage*> aImage,
                               NotNull<SourceBuffer*> aSourceBuffer,
+                              const IntSize& aIntrinsicSize,
                               const Maybe<IntSize>& aTargetSize,
                               DecoderFlags aDecoderFlags,
                               SurfaceFlags aSurfaceFlags,
@@ -139,6 +140,17 @@ DecoderFactory::CreateDecoder(DecoderType aType,
     return nullptr;
   }
 
+  // Add a placeholder to the SurfaceCache so we won't trigger any more decoders
+  // with the same parameters.
+  IntSize surfaceSize = aTargetSize.valueOr(aIntrinsicSize);
+  SurfaceKey surfaceKey =
+    RasterSurfaceKey(surfaceSize, aSurfaceFlags, /* aFrameNum = */ 0);
+  InsertOutcome outcome =
+    SurfaceCache::InsertPlaceholder(ImageKey(aImage.get()), surfaceKey);
+  if (outcome != InsertOutcome::SUCCESS) {
+    return nullptr;
+  }
+
   RefPtr<IDecodingTask> task = new DecodingTask(WrapNotNull(decoder));
   return task.forget();
 }
@@ -147,6 +159,7 @@ DecoderFactory::CreateDecoder(DecoderType aType,
 DecoderFactory::CreateAnimationDecoder(DecoderType aType,
                                        NotNull<RasterImage*> aImage,
                                        NotNull<SourceBuffer*> aSourceBuffer,
+                                       const IntSize& aIntrinsicSize,
                                        DecoderFlags aDecoderFlags,
                                        SurfaceFlags aSurfaceFlags)
 {
@@ -172,6 +185,16 @@ DecoderFactory::CreateAnimationDecoder(DecoderType aType,
     return nullptr;
   }
 
+  // Add a placeholder for the first frame to the SurfaceCache so we won't
+  // trigger any more decoders with the same parameters.
+  SurfaceKey surfaceKey =
+    RasterSurfaceKey(aIntrinsicSize, aSurfaceFlags, /* aFrameNum = */ 0);
+  InsertOutcome outcome =
+    SurfaceCache::InsertPlaceholder(ImageKey(aImage.get()), surfaceKey);
+  if (outcome != InsertOutcome::SUCCESS) {
+    return nullptr;
+  }
+
   RefPtr<IDecodingTask> task = new DecodingTask(WrapNotNull(decoder));
   return task.forget();
 }
diff --git a/image/DecoderFactory.h b/image/DecoderFactory.h
index e91b73bcdcdd..59d6aff663c1 100644
--- a/image/DecoderFactory.h
+++ b/image/DecoderFactory.h
@@ -54,6 +54,8 @@ public:
    *               notifications as decoding progresses.
    * @param aSourceBuffer The SourceBuffer which the decoder will read its data
    *                      from.
+   * @param aIntrinsicSize The intrinsic size of the image, normally obtained
+   *                       during the metadata decode.
    * @param aTargetSize If not Nothing(), the target size which the image should
    *                    be scaled to during decoding. It's an error to specify
    *                    a target size for a decoder type which doesn't support
@@ -68,6 +70,7 @@ public:
   CreateDecoder(DecoderType aType,
                 NotNull<RasterImage*> aImage,
                 NotNull<SourceBuffer*> aSourceBuffer,
+                const gfx::IntSize& aIntrinsicSize,
                 const Maybe<gfx::IntSize>& aTargetSize,
                 DecoderFlags aDecoderFlags,
                 SurfaceFlags aSurfaceFlags,
@@ -82,6 +85,8 @@ public:
    *               notifications as decoding progresses.
    * @param aSourceBuffer The SourceBuffer which the decoder will read its data
    *                      from.
+   * @param aIntrinsicSize The intrinsic size of the image, normally obtained
+   *                       during the metadata decode.
    * @param aDecoderFlags Flags specifying the behavior of this decoder.
    * @param aSurfaceFlags Flags specifying the type of output this decoder
    *                      should produce.
@@ -90,6 +95,7 @@ public:
   CreateAnimationDecoder(DecoderType aType,
                          NotNull<RasterImage*> aImage,
                          NotNull<SourceBuffer*> aSourceBuffer,
+                         const gfx::IntSize& aIntrinsicSize,
                          DecoderFlags aDecoderFlags,
                          SurfaceFlags aSurfaceFlags);
 
diff --git a/image/RasterImage.cpp b/image/RasterImage.cpp
index f670f277398f..fe4b7a6def7f 100644
--- a/image/RasterImage.cpp
+++ b/image/RasterImage.cpp
@@ -1309,12 +1309,13 @@ RasterImage::Decode(const IntSize& aSize, uint32_t aFlags)
   RefPtr<IDecodingTask> task;
   if (mAnim) {
     task = DecoderFactory::CreateAnimationDecoder(mDecoderType, WrapNotNull(this),
-                                                  mSourceBuffer, decoderFlags,
-                                                  surfaceFlags);
+                                                  mSourceBuffer, mSize,
+                                                  decoderFlags, surfaceFlags);
   } else {
     task = DecoderFactory::CreateDecoder(mDecoderType, WrapNotNull(this),
-                                         mSourceBuffer, targetSize, decoderFlags,
-                                         surfaceFlags, mRequestedSampleSize);
+                                         mSourceBuffer, mSize, targetSize,
+                                         decoderFlags, surfaceFlags,
+                                         mRequestedSampleSize);
   }
 
   // Make sure DecoderFactory was able to create a decoder successfully.
@@ -1322,18 +1323,6 @@ RasterImage::Decode(const IntSize& aSize, uint32_t aFlags)
     return NS_ERROR_FAILURE;
   }
 
-  // Add a placeholder for the first frame to the SurfaceCache so we won't
-  // trigger any more decoders with the same parameters.
-  SurfaceKey surfaceKey =
-    RasterSurfaceKey(aSize,
-                     task->GetDecoder()->GetSurfaceFlags(),
-                     /* aFrameNum = */ 0);
-  InsertOutcome outcome =
-    SurfaceCache::InsertPlaceholder(ImageKey(this), surfaceKey);
-  if (outcome != InsertOutcome::SUCCESS) {
-    return NS_ERROR_FAILURE;
-  }
-
   mDecodeCount++;
 
   // We're ready to decode; start the decoder.