JPG → WebP

Convert JPG images to WebP in your browser

If you are optimising a website, converting photographic JPGs to WebP is one of the easiest wins available. WebP typically produces files 25 to 35 percent smaller than JPG at equivalent visual quality, which directly improves page load time and Core Web Vitals. Since the source is a JPG there is no transparency to worry about.

How to use it

1. Add your JPG to the upload area.
2. Set the quality slider. Around 80 is a good default for web images and noticeably smaller than the JPG equivalent.
3. Optionally resize, which often saves more bytes than any codec change.
4. Convert and compare the two file sizes before downloading.

Frequently asked questions

How much smaller will my file be?

Typically 25 to 35 percent at matched visual quality, though it depends heavily on the image. The tool reports both sizes after conversion so you can verify the saving rather than assume it.

Does converting an already-compressed JPG hurt quality?

There is some additional loss, since you are re-encoding lossy data. At quality 80 or above it is rarely visible. For the best possible result, encode WebP from an original PNG or RAW file rather than from a JPG.

Do I still need a JPG fallback for old browsers?

Not in practice any more. WebP support is universal across current browsers. Serving a fallback is now optional rather than necessary for most audiences.

Will resizing help more than converting?

Often, yes. Serving a 4000-pixel-wide photo into a 800-pixel-wide layout wastes far more bytes than the codec choice does. Use the width and height fields alongside the format change.