diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@ CLI, easy way to illustrate local network interface.
 
 The intent is for understanding container networks :D
 
-![networ-devices](./img/sample.png)
+![networ-devices](./sample.jpg)
 
 ## example
 ```
@@ -41,7 +41,7 @@ or
 # dot -Tpng xx.dot > output.png
 ```
 example:
-![networ-devices](./img/sample.png)
+![networ-devices](./sample.jpg)
 
 ### prequisite
 Create an ouput image with any [graphviz](http://www.graphviz.org/download) compatible renderer
diff --git a/img/sample.png b/img/sample.png
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diff --git a/sample.jpg b/sample.jpg
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