diff --git a/src/components/post/tp-image.vue b/src/components/post/tp-image.vue
index 7346ac38..c67b4e7e 100644
--- a/src/components/post/tp-image.vue
+++ b/src/components/post/tp-image.vue
@@ -61,7 +61,7 @@ function getImageTitle(): string {
 
 function getImageUrl(): string {
   const img = props.data.insert.image;
-  const append = "?x-oss-process=image/format,webp";
+  const append = "?x-oss-process=image/format,png";
   return img + append;
 }
 </script>
diff --git a/src/plugins/Mys/utils/getNewsCard.ts b/src/plugins/Mys/utils/getNewsCard.ts
index 94caf248..b0cd9cca 100644
--- a/src/plugins/Mys/utils/getNewsCard.ts
+++ b/src/plugins/Mys/utils/getNewsCard.ts
@@ -71,7 +71,7 @@ export function getPostCover(item: TGApp.Plugins.Mys.News.Item): string {
   if (cover === undefined) {
     cover = defaultCover;
   } else {
-    cover = `${cover}?x-oss-process=image/format,webp`;
+    cover = `${cover}?x-oss-process=image/format,png`;
   }
   return cover;
 }