diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 00000000000..fb39fe041bc
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,4 @@
+**/yui/build/** -diff
+**/amd/build/** -diff
+theme/bootstrapbase/style/editor.css -diff
+theme/bootstrapbase/style/moodle.css -diff