diff --git a/public/images/screenshot1.jpg b/public/images/screenshot1.jpg
deleted file mode 100644
index 9f3a6fa..0000000
Binary files a/public/images/screenshot1.jpg and /dev/null differ
diff --git a/public/images/screenshot1.webp b/public/images/screenshot1.webp
new file mode 100644
index 0000000..928588c
Binary files /dev/null and b/public/images/screenshot1.webp differ
diff --git a/public/images/screenshot2.jpg b/public/images/screenshot2.jpg
deleted file mode 100644
index d20e545..0000000
Binary files a/public/images/screenshot2.jpg and /dev/null differ
diff --git a/public/images/screenshot2.webp b/public/images/screenshot2.webp
new file mode 100644
index 0000000..768f4bf
Binary files /dev/null and b/public/images/screenshot2.webp differ
diff --git a/public/images/screenshot3.jpg b/public/images/screenshot3.jpg
deleted file mode 100644
index 73a0562..0000000
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diff --git a/public/images/screenshot3.webp b/public/images/screenshot3.webp
new file mode 100644
index 0000000..7a09741
Binary files /dev/null and b/public/images/screenshot3.webp differ
diff --git a/public/manifest.json b/public/manifest.json
index 13928f7..ef481cd 100644
--- a/public/manifest.json
+++ b/public/manifest.json
@@ -29,18 +29,18 @@
   "description": "eBook reader supporting EPUB and FB2 files",
   "screenshots": [
     {
-      "src": "/images/screenshot1.jpg",
-      "type": "image/jpg",
+      "src": "/images/screenshot1.webp",
+      "type": "image/webp",
       "sizes": "1080x2400"
     },
     {
-      "src": "/images/screenshot2.jpg",
-      "type": "image/jpg",
+      "src": "/images/screenshot2.webp",
+      "type": "image/webp",
       "sizes": "1080x2400"
     },
     {
-      "src": "/images/screenshot3.jpg",
-      "type": "image/jpg",
+      "src": "/images/screenshot3.webp",
+      "type": "image/webp",
       "sizes": "1080x2400"
     }
   ]