diff --git a/.gitattributes b/.gitattributes
index fcadb2c..398015c 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1 +1,3 @@
 * text eol=lf
+
+*.png   binary
diff --git a/doc/s3fs.png b/doc/s3fs.png
new file mode 100644
index 0000000..80635fa
Binary files /dev/null and b/doc/s3fs.png differ