diff --git a/README.md b/README.md
index ec56f5b2..17b15c12 100644
--- a/README.md
+++ b/README.md
@@ -194,7 +194,7 @@ Step 3：enjoy coding
 
 ### PreviewSlider
 
-![PreviewSlider](https://raw.githubusercontent.com/NaBian/HandyControl/master/Resources/PreviewSlider.png)
+![PreviewSlider](https://raw.githubusercontent.com/NaBian/HandyControl/master/Resources/PreviewSlider.gif)
 
 ### CompareSlider
 
diff --git a/Resources/Brush.png b/Resources/Brush.png
index 7929ceb6..2cfb9b6f 100644
Binary files a/Resources/Brush.png and b/Resources/Brush.png differ
diff --git a/Resources/PreviewSlider.gif b/Resources/PreviewSlider.gif
new file mode 100644
index 00000000..270876ad
Binary files /dev/null and b/Resources/PreviewSlider.gif differ
diff --git a/Resources/PreviewSlider.png b/Resources/PreviewSlider.png
deleted file mode 100644
index ece5e9dd..00000000
Binary files a/Resources/PreviewSlider.png and /dev/null differ