diff --git a/mozilla/browser/base/content/metaData.js b/mozilla/browser/base/content/metaData.js
index 3195fdfe5f7..a3100575a3d 100644
--- a/mozilla/browser/base/content/metaData.js
+++ b/mozilla/browser/base/content/metaData.js
@@ -260,10 +260,21 @@ function checkForImage(elem, htmllocalname)
 
     var imageRequest = img.QueryInterface(nsIImageLoadingContent)
                           .getRequest(nsIImageLoadingContent.CURRENT_REQUEST);
-    if (imageRequest)
-      setInfo("image-type", imageRequest.mimeType);
-    else
-      setInfo("image-type", "");
+    var imageType = "";
+    if (imageRequest) {
+      imageType = imageRequest.mimeType;
+      var imageMimeType = /^image\/(.*)/.exec(imageType);
+      if (imageMimeType) {
+        imageType = imageMimeType[1].toUpperCase();
+        var frameCount = imageRequest.image.numFrames;
+        if (frameCount > 1)
+          imageType = gMetadataBundle.getFormattedString("animatedImageType",
+                                                         [imageType, frameCount]);
+        else
+          imageType = gMetadataBundle.getFormattedString("imageType", [imageType]);
+      }
+    }
+    setInfo("image-type", imageType);
 
     var imageSize = "";
     if (img.width) {
diff --git a/mozilla/browser/locales/en-US/chrome/browser/metaData.properties b/mozilla/browser/locales/en-US/chrome/browser/metaData.properties
index cd66cdf5df5..75aef837e69 100644
--- a/mozilla/browser/locales/en-US/chrome/browser/metaData.properties
+++ b/mozilla/browser/locales/en-US/chrome/browser/metaData.properties
@@ -9,6 +9,8 @@ altTextMissing=Missing
 altTextBlank=Blank
 imageSize=%S KB (%S bytes)
 imageSizeUnknown=Unknown (not cached)
+imageType=%S image
+animatedImageType=%S image (animated, %S frames)
 imageDimensions=%Spx \u00D7 %Spx
 imageDimensionsScaled=%Spx \u00D7 %Spx (scaled to %Spx \u00D7 %Spx)
 # LOCALIZATION NOTE: Next two strings are for language name representations