JPEG XL Test Page

This page shows a JPEG XL image, if your browser can handle it! At this point in time (January 2026) this more or less means only Safari will display the image, as far as I know. See also Can I Use.

The person in the image is Jon Sneyers, co-author of the JPEG XL spec and also creator of the “Free Lossless Image Format” that came before it.

I find JPEG XL interesting because of its history. It once was implemented in Chrome, but hidden behind a feature flag. Then Chrome said that it did not saw enough usage, which is unsurprising, really, and it was removed. Now they blessed it again and are re-adding it! Some of this story is found on the JPEG XL Wikipedia page