Convert WebP to JPEG XL
Drop a WebP file below and get a JPEG XL 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 WebP
Lower means a smaller file. 75 is a good default for photos.
100% in your browser Files are never uploaded.
Why convert WebP to JPEG XL?
For the same picture, JPEG XL usually lands well under the size of the WebP original. That matters when you are trimming page weight or squeezing under an upload limit.
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.
WebP vs JPEG XL at a glance
| Property | WebP | JPEG XL |
|---|---|---|
| Compression | Lossy | Lossy |
| Transparency | Yes | Yes |
| Typical file size | 65-75% of an equivalent JPEG | 45-60% of an equivalent JPEG |
| Compatibility | Supported by all current browsers and most apps | Safari and recent Chrome; still uncommon elsewhere |
| Usually comes from | Websites optimising page weight | Long-term archives and photography workflows |
Frequently asked questions
Are my WebP 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 JPEG XL lose quality?
JPEG XL 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.
Why did I end up with a WebP file?
Most websites now serve WebP because it is smaller than JPEG, so saving an image from a web page usually hands you one. Browsers support it well, desktop software noticeably less so — which is why converting it away is such a common need.
Is JPEG XL ready to use?
Partly. Safari has supported it for some time and Chrome shipped stable support in early 2026, but overall coverage still sits around 15%. It is a sound choice for archiving, where compression quality matters more than universal support, and a poor one for images going onto a public website today.