diff --git a/.gitattributes b/.gitattributes
index ec5f7ff..a1f71e8 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -10,4 +10,7 @@ composer.lock export-ignore
 requirements.txt export-ignore
 unk.flag.svg export-ignore
 versions.txt export-ignore
-
+*.gif diff=image
+*.jpg diff=image
+*.png diff=image
+*.ico diff=image
diff --git a/tools/git-imgdiff.sh b/tools/git-imgdiff.sh
new file mode 100755
index 0000000..c70550d
--- /dev/null
+++ b/tools/git-imgdiff.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+# by http://varya.me/en/posts/image-diffs-with-git/
+compare $2 $1 png:- | montage -geometry +4+4 $2 - $1 png:- | gwenview /dev/stdin 
+