diff --git a/src/components/image-converter.tsx b/src/components/image-converter.tsx
index c9dce5e..e01ef5f 100644
--- a/src/components/image-converter.tsx
+++ b/src/components/image-converter.tsx
@@ -38,8 +38,8 @@ export function ImageConverter() {
   const [filenames, setFilenames] = useState<string[]>([]);
   const [width, setWidth] = useState<number | string>("");
   const [height, setHeight] = useState<number | string>("");
-  const [format, setFormat] = useState<"png" | "jpeg" | "webp">("png");
-  const [quality, setQuality] = useState<number>(80);
+  const [format, setFormat] = useState<"png" | "jpeg" | "webp">("webp");
+  const [quality, setQuality] = useState<number>(90);
   
   const [prefix, setPrefix] = useState<string>("");
   const [suffix, setSuffix] = useState<string>("");