diff --git a/README.md b/README.md
index eb08a610..f132e479 100644
--- a/README.md
+++ b/README.md
@@ -108,8 +108,8 @@ docker run -p 8181:8181 --name mindoc -e DB_ADAPTER=mysql -e MYSQL_PORT_3306_TCP
    
 # 支持 MinDoc
 
-![支付宝](https://raw.githubusercontent.com/lifei6671/mindoc/master/static/images/alipay.jpg)
-![微信支付](https://raw.githubusercontent.com/lifei6671/mindoc/master/static/images/weixin.jpg)
+![支付宝](https://raw.githubusercontent.com/lifei6671/mindoc/master/static/images/alipay.png)
+![微信支付](https://raw.githubusercontent.com/lifei6671/mindoc/master/static/images/weixin.png)
 
 # 项目截图
 
diff --git a/static/images/alipay.jpg b/static/images/alipay.jpg
deleted file mode 100644
index db9f9ab3..00000000
Binary files a/static/images/alipay.jpg and /dev/null differ
diff --git a/static/images/alipay.png b/static/images/alipay.png
new file mode 100644
index 00000000..50b8cb40
Binary files /dev/null and b/static/images/alipay.png differ
diff --git a/static/images/weixin.jpg b/static/images/weixin.jpg
deleted file mode 100644
index 456a83df..00000000
Binary files a/static/images/weixin.jpg and /dev/null differ
diff --git a/static/images/weixin.png b/static/images/weixin.png
new file mode 100644
index 00000000..30e686df
Binary files /dev/null and b/static/images/weixin.png differ