diff --git a/.gitattributes b/.gitattributes
index fc42a22eb..01777a501 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,14 +1,6 @@
-# Set the default behavior, in case people don't have core.autocrlf set.
-* text=auto
+# Normalize all text files to LF on commit and checkout across platforms.
+* text=auto eol=lf
 
-# Specify files that should have unix (lf) style end-of-line
-# character.  In particular, all html files, scripts, and the Makefile
-# should have Unix style (LF) end-of-line character
-
-*.html text eol=lf
-*.css text eol=lf
-Makefile text eol=lf
-*.md text eol=lf
-W3C-ED text eol=lf
-respec-w3c-common text eol=lf
-fixup.sed text eol=lf
+# Treat image and OmniGraffle assets as binary.
+*.png binary
+*.graffle binary