diff --git a/app/pages/phim/[slug].vue b/app/pages/phim/[slug].vue
index 73ba8e4..d3888c0 100644
--- a/app/pages/phim/[slug].vue
+++ b/app/pages/phim/[slug].vue
@@ -153,7 +153,7 @@ useHead(() => ({
     { name: 'description', content: movie.value ? `Xem ${movie.value.name} online` : 'Xem phim Hàn Quốc online' },
     { property: 'og:title', content: movie.value ? `${movie.value.name} - CineK` : 'CineK' },
     { property: 'og:description', content: movie.value?.content || '' },
-    { property: 'og:image', content: movie.value?.poster || movie.value?.thumb || '/icon.png' },
+    { property: 'og:image', content: movie.value?.poster || movie.value?.thumb || '/icon.webp' },
   ],
 }))
 </script>
diff --git a/app/pages/thanh-vien.vue b/app/pages/thanh-vien.vue
index 3c6e259..305abd9 100644
--- a/app/pages/thanh-vien.vue
+++ b/app/pages/thanh-vien.vue
@@ -59,7 +59,7 @@ const avatarGrid = computed(() => {
     'viet-nam': ['01', '02', '03', '04', '05', '06', '07', '08', '09', '10', '11', '12', '13', '14', '15', '16'],
   }
   const nums = categoryMap[selectedAvatarCategory.value] || []
-  return nums.map(n => `/avatars/${selectedAvatarCategory.value}/${n}.jpg`)
+  return nums.map(n => `/avatars/${selectedAvatarCategory.value}/${n}.webp`)
 })
 
 const sidebarItems = [
diff --git a/app/pages/xem/[slug].vue b/app/pages/xem/[slug].vue
index 913a4bd..266123a 100644
--- a/app/pages/xem/[slug].vue
+++ b/app/pages/xem/[slug].vue
@@ -401,7 +401,7 @@ watch([movie, activeEpisode], () => { if (hasStarted.value) saveWatchHistory() }
 watch(libraryItem, () => { refreshFavoriteState() })
 useHead(() => ({
   title: movie.value ? `Xem ${movie.value.name} - CineK` : 'Đang tải - CineK',
-  meta: [{ name: 'description', content: movie.value ? `Xem ${movie.value.name} online` : '' }, { property: 'og:title', content: movie.value ? `${movie.value.name} - CineK` : 'CineK' }, { property: 'og:image', content: movie.value?.poster || movie.value?.thumb || '/icon.png' }],
+  meta: [{ name: 'description', content: movie.value ? `Xem ${movie.value.name} online` : '' }, { property: 'og:title', content: movie.value ? `${movie.value.name} - CineK` : 'CineK' }, { property: 'og:image', content: movie.value?.poster || movie.value?.thumb || '/icon.webp' }],
 }))
 </script>
 
diff --git a/nuxt.config.ts b/nuxt.config.ts
index f24762e..6b26fb4 100644
--- a/nuxt.config.ts
+++ b/nuxt.config.ts
@@ -18,15 +18,15 @@ export default defineNuxtConfig({
         { property: 'og:type', content: 'website' },
         { property: 'og:title', content: 'CineK - Xem phim Hàn Quốc online' },
         { property: 'og:description', content: 'Xem phim Hàn Quốc online, phim bộ, phim lẻ, show và nội dung mới cập nhật với trải nghiệm xem mượt trên mọi thiết bị.' },
-        { property: 'og:image', content: '/icon.png' },
+        { property: 'og:image', content: '/icon.webp' },
         { name: 'twitter:card', content: 'summary_large_image' },
         { name: 'twitter:title', content: 'CineK - Xem phim Hàn Quốc online' },
         { name: 'twitter:description', content: 'Kho phim Hàn Quốc online được cập nhật thường xuyên, hỗ trợ Vietsub, thuyết minh và lồng tiếng.' },
         { name: 'theme-color', content: '#020617' },
       ],
       link: [
-        { rel: 'icon', type: 'image/png', href: '/icon.png' },
-        { rel: 'apple-touch-icon', href: '/icon.png' },
+        { rel: 'icon', type: 'image/webp', href: '/icon.webp' },
+        { rel: 'apple-touch-icon', href: '/icon.webp' },
       ],
     },
   },
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diff --git a/public/avatars/viet-nam/10.webp b/public/avatars/viet-nam/10.webp
new file mode 100644
index 0000000..48195ce
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diff --git a/public/avatars/viet-nam/11.jpg b/public/avatars/viet-nam/11.jpg
deleted file mode 100644
index 9e81207..0000000
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diff --git a/public/avatars/viet-nam/11.webp b/public/avatars/viet-nam/11.webp
new file mode 100644
index 0000000..f877eec
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diff --git a/public/avatars/viet-nam/12.jpg b/public/avatars/viet-nam/12.jpg
deleted file mode 100644
index 7592164..0000000
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diff --git a/public/avatars/viet-nam/12.webp b/public/avatars/viet-nam/12.webp
new file mode 100644
index 0000000..8ac7527
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diff --git a/public/avatars/viet-nam/13.jpg b/public/avatars/viet-nam/13.jpg
deleted file mode 100644
index 915111a..0000000
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diff --git a/public/avatars/viet-nam/13.webp b/public/avatars/viet-nam/13.webp
new file mode 100644
index 0000000..8c12d78
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diff --git a/public/avatars/viet-nam/14.jpg b/public/avatars/viet-nam/14.jpg
deleted file mode 100644
index a232ac9..0000000
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diff --git a/public/avatars/viet-nam/14.webp b/public/avatars/viet-nam/14.webp
new file mode 100644
index 0000000..14b85e9
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diff --git a/public/avatars/viet-nam/15.jpg b/public/avatars/viet-nam/15.jpg
deleted file mode 100644
index 454c7d1..0000000
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diff --git a/public/avatars/viet-nam/15.webp b/public/avatars/viet-nam/15.webp
new file mode 100644
index 0000000..b13fc8a
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diff --git a/public/avatars/viet-nam/16.jpg b/public/avatars/viet-nam/16.jpg
deleted file mode 100644
index 2ddbd3f..0000000
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diff --git a/public/avatars/viet-nam/16.webp b/public/avatars/viet-nam/16.webp
new file mode 100644
index 0000000..2ecd1ab
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diff --git a/public/icon.png b/public/icon.png
deleted file mode 100644
index a4b61af..0000000
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diff --git a/public/icon.webp b/public/icon.webp
new file mode 100644
index 0000000..b1b6916
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diff --git a/server/api/auth/avatar.put.ts b/server/api/auth/avatar.put.ts
index 2d9d230..8914a71 100644
--- a/server/api/auth/avatar.put.ts
+++ b/server/api/auth/avatar.put.ts
@@ -28,7 +28,7 @@ export default defineEventHandler(async (event) => {
   }
 
   const parts = avatar.split('/')
-  const num = parts[2]?.replace('.jpg', '')
+  const num = parts[2]?.replace(/\.(?:jpg|webp)$/, '')
   if (parts.length !== 3 || parts[0] !== 'avatars' || !validCategories.includes(parts[1]) || !validNumbers[parts[1]]?.includes(num)) {
     throw createError({ statusCode: 400, message: 'Avatar không hợp lệ' })
   }