JPG to WebP converter
Convert JPG images to WebP in your browser — re-encoded once at the quality you choose. Free, no sign-up, nothing uploaded.
Part of image tools and design tools.
What happens to quality
Both formats are lossy, so this is a second round of compression: the WebP is encoded from pixels the JPG has already simplified. At 85% quality or more the extra loss is hard to see; lower than that, artefacts from both encoders stack up. Convert from the best original you have rather than from a copy that has already been through this once. WebP is typically 25-35% smaller than a JPEG of the same visual quality and every current browser displays it, which makes it the sensible target for images going on a website.
What happens to transparency
JPG has no alpha channel, so there is no transparency to carry over and the WebP comes out fully opaque. WebP could hold transparency, but converting does not create it: a white background in the picture stays white pixels, not see-through ones.
If your browser cannot write WebP
Every current browser displays WebP, but not every one can write it — older Safari versions in particular. When the browser silently hands back something else, the converter notices and says so, rather than giving you a file named .webp that is really a PNG. PNG and JPG work everywhere.
Your JPG never leaves this page
Most online JPG to WebP converters upload the file to a server and send the result back. This one decodes and re-encodes it with the image APIs built into your browser, so the WebP you download was produced on your own machine — you can check by opening the network tab, or by going offline and converting anyway.
Other conversions
Going the other way? WebP to JPG converter.
Or open the full image converter and pick any output format.