--- a/third_party/blink/renderer/platform/image-decoders/BUILD.gn
+++ b/third_party/blink/renderer/platform/image-decoders/BUILD.gn
@@ -77,14 +77,6 @@
     "//ui/gfx/geometry:geometry_skia",
   ]
 
-  if (enable_av1_decoder) {
-    sources += [
-      "avif/crabbyavif_image_decoder.cc",
-      "avif/crabbyavif_image_decoder.h",
-    ]
-
-    deps += [ "//third_party/crabbyavif" ]
-  }
 
   if (enable_rust_png) {
     sources += [
--- a/third_party/blink/renderer/platform/image-decoders/image_decoder.cc
+++ b/third_party/blink/renderer/platform/image-decoders/image_decoder.cc
@@ -51,9 +51,6 @@
 #include "ui/gfx/geometry/size.h"
 #include "ui/gfx/geometry/size_conversions.h"
 
-#if BUILDFLAG(ENABLE_AV1_DECODER)
-#include "third_party/blink/renderer/platform/image-decoders/avif/crabbyavif_image_decoder.h"
-#endif
 
 namespace blink {
 
@@ -196,11 +193,6 @@
   if (MatchesBMPSignature(contents)) {
     return "image/bmp";
   }
-#if BUILDFLAG(ENABLE_AV1_DECODER)
-  if (CrabbyAVIFImageDecoder::MatchesAVIFSignature(fast_reader)) {
-    return "image/avif";
-  }
-#endif
 
   return String();
 }
@@ -305,12 +297,6 @@
   } else if (mime_type == "image/bmp" || mime_type == "image/x-xbitmap") {
     decoder = std::make_unique<BMPImageDecoder>(alpha_option, color_behavior,
                                                 max_decoded_bytes);
-#if BUILDFLAG(ENABLE_AV1_DECODER)
-  } else if (mime_type == "image/avif") {
-    decoder = std::make_unique<CrabbyAVIFImageDecoder>(
-        alpha_option, high_bit_depth_decoding_option, color_behavior, aux_image,
-        max_decoded_bytes, animation_option);
-#endif
   }
 
   if (decoder) {