Free tool

Convert images to JPEG XL.

The newest image format on the web — smaller than JPEG at the same quality, with a true lossless mode. Drop in JPGs, PNGs or HEIC photos; nothing leaves your browser.

Drag & drop photos or a folder here

JPG, PNG, HEIC/HEIF, BMP, GIF

Drop more here, or ·

Resolution

Keep original resolution Scale down to max px on longest side

JPEG XL quality

Higher keeps more detail; lower makes a smaller file.

Lossless Every pixel exactly preserved — best for PNGs, screenshots and graphics. On photos that are already JPEG it usually makes the file bigger, not smaller.

One format, both jobs

It's designed to replace JPEG for photos and PNG for graphics. On photos from our own projects, these files came out 19–34% smaller than JPEG at the same perceptual quality — and its lossless mode usually beats PNG.

Arriving, not everywhere yet

Safari has shown it since 2023; Chrome and Firefox switched it on in October 2026. Around 60% of browsers in use can display it — see caniuse for today's figure. On a website, offer it alongside WebP.

Nothing uploaded

Your browser can't write JPEG XL on its own, so this runs the reference encoder, libjxl, as WebAssembly on your machine. Your photos are never sent anywhere — including to us.