diff --git a/README.md b/README.md
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 | 主页                                | 卡片                                |
 |-----------------------------------|-----------------------------------|
-| ![](screenshots/device/main.jpeg) | ![](screenshots/device/card.jpeg) |
+| ![](screenshots/device/main.png) | ![](screenshots/device/card.png) |
 
 使用说明
 
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