diff --git a/docs/.vuepress/public/images/applet/applet-demo.jpeg b/docs/.vuepress/public/images/applet/applet-demo.jpeg
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index 5d2ce8391..000000000
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diff --git a/docs/.vuepress/public/images/applet/applet-demo.png b/docs/.vuepress/public/images/applet/applet-demo.png
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diff --git a/docs/document/applet/overview.md b/docs/document/applet/overview.md
index 08f92a6bc..d6aa9b3af 100644
--- a/docs/document/applet/overview.md
+++ b/docs/document/applet/overview.md
@@ -12,7 +12,7 @@ SDK 目前支持微信、QQ、百度小程序、抖音、uni-app 编译的原生
 
 扫描下方小程序二维码，或者微信搜索 **环信即时通讯云** 即可快速体验环信小程序 Demo 在线版本：
 
-![img](/images/applet/applet-demo.jpeg)
+![img](/images/applet/applet-demo.png)
 
 点击链接，扫描二维码，即可快速体验环信 Uniapp 编译生成的移动端原生应用：
 
diff --git a/docs/product/product_message_overview.md b/docs/product/product_message_overview.md
index 718d6eeb2..5d71d4e4e 100644
--- a/docs/product/product_message_overview.md
+++ b/docs/product/product_message_overview.md
@@ -57,7 +57,7 @@
 下表为各平台/框架支持的消息功能。
 
 | 消息功能 | Android  | iOS | Web  | 小程序 | HarmonyOS | Flutter | React Native  | Unity | Windows |
-| :---- | :------ |:------ |:------ |:------ |:------ |:------ |:------ |:------ |:------ |
+| :----: | :------: |:------: |:------: |:------: |:------: |:------: |:------: |:------: |:------: |
 | 发送和接收消息   |  ✓ |  ✓ |  ✓  | ✓   | ✓ | ✓   |  ✓  |  ✓  | ✓  |
 | 获取服务端历史消息  |  ✓ |  ✓ |  ✓  | ✓  | ✓ | ✓   |  ✓  |  ✓  | ✓  |
 | 获取本地历史消息  |  ✓ |  ✓ |  —  | —   | ✓ | ✓   |  ✓  |  ✓  | ✓  |