Convert JPEG XL to AVIF
Drop a JPEG XL file below and get a AVIF back. The conversion happens on your own machine, so nothing is uploaded and there is no size or quantity limit beyond what your browser can hold in memory.
Drop images here
Accepts JPEG XL
Lower means a smaller file. 75 is a good default for photos.
100% in your browser Files are never uploaded.
Why convert JPEG XL to AVIF?
Plenty of websites, content management systems and older desktop programs reject JPEG XL uploads outright. AVIF is accepted just about everywhere, and that alone accounts for most of these conversions.
Both formats are lossy. Every re-encode discards a little more detail, so it is worth starting from the original rather than from a copy that has already been through this a few times.
JPEG XL vs AVIF at a glance
| Property | JPEG XL | AVIF |
|---|---|---|
| Compression | Lossy | Lossy |
| Transparency | Yes | Yes |
| Typical file size | 45-60% of an equivalent JPEG | 40-55% of an equivalent JPEG |
| Compatibility | Safari and recent Chrome; still uncommon elsewhere | All current browsers; some older desktop apps lag behind |
| Usually comes from | Long-term archives and photography workflows | Websites optimising page weight |
Frequently asked questions
Are my JPEG XL files uploaded anywhere?
No. The decoder and encoder are WebAssembly modules that run inside this page. You can verify it by opening your browser’s network tab — converting a file produces no outbound requests. You could even disconnect from the internet after the page loads and it would still work.
Is there a file size or quantity limit?
There is no limit imposed by us. The practical ceiling is your device’s memory, since the image has to be held uncompressed while converting. On a typical laptop, images up to around 100 megapixels convert without trouble.
Will converting to AVIF lose quality?
AVIF is a lossy format, so some data is discarded. At the default quality setting the difference is not visible at normal viewing sizes. If you need an exact copy of the pixels, choose PNG instead.
Does it work on a phone?
Yes. The same WebAssembly modules run on mobile browsers. Conversion is slower than on a desktop because phone CPUs are weaker, and very large images are more likely to hit memory limits.
What produces JPEG XL files?
Mostly archiving workflows and photography software that adopted it early. It is not something a camera or phone hands you. If you have one, it most likely came from someone deliberately choosing it for storage quality.
Where does AVIF actually work?
Every major browser decodes AVIF natively, so it is safe for use on the web. Desktop applications lag further behind — plenty of image viewers and editors still cannot open it. Encoding is also noticeably slower than the other formats here, so expect a large image to take a few seconds.