diff --git a/README.md b/README.md
index 373f3bfa8cd9d8dbb8fd82e9e46ddd52596a4bf9..4d91d0ea5b5e8feb98ace294a816c9219d956f46 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 Easy python script to draw timing diagram by using pyroot.
 
-![example](/example.eps)
+![example](/example.png)
 
 ## Requirement
 
diff --git a/example.eps b/example.eps
deleted file mode 100644
index aad17e17b91e280b69b3e0631b17b0b558180033..0000000000000000000000000000000000000000
--- a/example.eps
+++ /dev/null
@@ -1,101 +0,0 @@
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diff --git a/example.png b/example.png
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Binary files /dev/null and b/example.png differ