diff --git a/README.md b/README.md
index 82e18202..400f49e6 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@ One-Click to deploy your own ChatGPT web UI.
 
 [![Open in Gitpod](https://gitpod.io/button/open-in-gitpod.svg)](https://gitpod.io/#https://github.com/Yidadaa/ChatGPT-Next-Web)
 
-![主界面](./static/cover.jpg)
+![主界面](./static/cover.png)
 
 </div>
 
@@ -57,9 +57,9 @@ One-Click to deploy your own ChatGPT web UI.
 
 ## 截图 Screenshots
 
-![设置 Settings](./static/settings.jpg)
+![设置 Settings](./static/settings.png)
 
-![更多展示 More](./static/more.jpg)
+![更多展示 More](./static/more.png)
 
 ## LICENSE
 
diff --git a/static/cover.jpg b/static/cover.jpg
deleted file mode 100644
index 13e26020..00000000
Binary files a/static/cover.jpg and /dev/null differ
diff --git a/static/cover.png b/static/cover.png
new file mode 100644
index 00000000..0587bd29
Binary files /dev/null and b/static/cover.png differ
diff --git a/static/more.jpg b/static/more.jpg
deleted file mode 100644
index 58d8a0b5..00000000
Binary files a/static/more.jpg and /dev/null differ
diff --git a/static/more.png b/static/more.png
new file mode 100644
index 00000000..683a16f0
Binary files /dev/null and b/static/more.png differ
diff --git a/static/settings.jpg b/static/settings.jpg
deleted file mode 100644
index 436218c9..00000000
Binary files a/static/settings.jpg and /dev/null differ
diff --git a/static/settings.png b/static/settings.png
new file mode 100644
index 00000000..22d841c3
Binary files /dev/null and b/static/settings.png differ