Convert JPEG XL to JPG
Your files are processed on your device. We never upload them.
Outside Safari, JPEG XL is decoded with libjxl from jSquash.
How to convert JPEG XL to JPG
- 01A ▸Choose your JXL images, or drop them on the page.
- 02A ▸Pick a quality, and a colour for any see-through parts.
- 03A ▸Select Convert to JPG, then download each JPG, or all of them as a zip.
About JPEG XL to JPG
Where JPEG XL files come from
JPEG XL (.jxl) files come from editors such as Photoshop, GIMP, and darktable, from photographers sharing high-quality exports, and from websites that send JPEG XL to browsers that read it. Support is still patchy. Most upload forms, office apps, photo printers, and older Windows and Android apps reject it, while JPG opens everywhere.
What changes
- The JPG is a new lossy copy. At High (90) it is visually very close; Best (95) is closer still.
- See-through parts are filled with the colour you choose, because JPG has no transparency.
- HDR and wide colour become standard 8-bit colour (sRGB).
- Metadata such as camera details and location is not copied.
Measured
Our 12-megapixel sample photo (4032 by 3024), saved as JPEG XL at libjxl's visually lossless setting (distance 1), converted at High in Chrome on a laptop using Chrome's own JPEG XL decoder. Phone timings are still to be measured.
| JXL file | 1 MB |
|---|---|
| JPG file | 1.3 MB |
| Time in Chrome (laptop) | 0.3 seconds |
In your browser
Safari 17 and later, and current Chrome and Edge, read JPEG XL themselves, so nothing extra is downloaded. In browsers that can't, the first conversion downloads a 0.3 MB decoder (libjxl), and later conversions reuse it from the browser's cache.
Limits
- HDR and high bit-depth JXL files are saved as standard 8-bit colour.
- Animated JXL files give only the first frame.
- Very large images may be reduced to about 16 megapixels on iPhones. The result says so.
Other options
- JPEG XL to PNG: an exact, lossless copy that keeps transparency.
- Compress image: make the JPGs smaller for email or upload forms.
- Image to PDF on Open PDF Toolkit: put the converted pictures into a PDF.
Questions
What is a JXL file?
JPEG XL is a newer image format, designed as the successor to JPG. Editors such as Photoshop, GIMP, and darktable can export it, and some websites send it to browsers that read it. Many apps, websites, and Windows versions can't open it yet.
Are my images uploaded?
No. Your files are processed on your device. We never upload them.
Does converting JXL to JPG lose quality?
A little, because JPG compresses with loss. At High or Best the difference is hard to see. Use JPEG XL to PNG for an exact copy.
What happens to transparency?
JPG has no transparency, so see-through parts are filled with the colour you choose, white by default.
Can I convert many JXL files at once?
Yes. Choose or drop as many as you like and download them all as one zip.