How to open a .jxl file: without installing anything

How to open a .jxl file

A .jxl is a JPEG XL file: Can recompress a JPG losslessly and shrink it by ~20%. Excellent quality, limited browser support. Windows Photos, macOS Preview, GIMP, Photoshop, any browser open it. Or drop it below: it opens and converts in your browser, nothing to install.

Drop files here or click to chooseSeveral files at once are fine.

🔒 Nothing is uploaded. Check the Network tab of your browser: it stays empty.

Three ways to open it

Drop the .jxl file above: it opens and converts right here, nothing to install.
For a desktop app: Windows Photos, macOS Preview, GIMP, Photoshop, any browser.
If it still will not open, convert it to PNG, that is what most people are really after.

Convert a .jxl

JPEG XL → PNG JPEG XL → JPG JPEG XL → WebP JPEG XL → AVIF JPEG XL → BMP JPEG XL → ICO

Questions

What program opens a .jxl file?

Windows Photos, macOS Preview, GIMP, Photoshop, any browser. Or drop it here, without installing anything.

Why won't my .jxl open?

Either the viewer does not know JPEG XL (can recompress a jpg losslessly and shrink it by ~20%. excellent quality, limited browser support.), or the file is damaged or misnamed. Converting to PNG fixes the first case.

Is it safe to open a .jxl here?

Yes: the file is read in your browser and never leaves your device.