readded image to format

Author: HHMagnus

index.html

@@ -93,8 +93,8 @@ <h1>Offline Image Converter</h1>
     <input type="file" id="fileInput" accept="image/*" />
 
     <select id="outputType">
-      <option value="png">PNG</option>
-      <option value="jpeg">JPEG</option>
+      <option value="image/png">PNG</option>
+      <option value="image/jpeg">JPEG</option>
       <option value="image/webp">WEBP</option>
       <option value="image/bmp">BMP</option>
       <option value="image/tiff">TIFF</option>