Why convert JPG to WebP?
WebP was designed for the web. Its lossy compression is usually more efficient than JPG, so the same photo takes fewer bytes at a similar visual quality. Smaller images mean pages appear faster, especially on mobile data, and page-speed tools often recommend serving images in a modern format like WebP.
All current major browsers support WebP, and most content management systems accept it.
How to convert JPG to WebP
Upload a JPG and set the quality. The default of 90 percent stays very close to the original. For most website photos, 75 to 85 percent gives a much smaller file with no difference you'd notice. The size and the percentage saved appear next to the original as soon as the conversion finishes.
Both formats are lossy, so start from the best original you have. Converting a JPG that was already heavily compressed keeps its artifacts and can't remove them.
When to keep JPG instead
Keep a JPG when sending photos by email, uploading to forms, or sharing with people who use older software. Some apps and print services still don't open WebP. A common approach is to use WebP on your website and keep the JPG as your master copy.
Using WebP on your website
Upload the WebP files to your site or media library like any other image. If you need to support very old browsers, the HTML picture element lets you offer WebP with a JPG fallback. Resize images to the width they are displayed at before converting, because a correctly sized WebP gives the biggest saving of all. The Bulk Image Compressor can also convert up to 20 JPGs to WebP at once.