Convert PNG to JPEG XL
Drop a PNG 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 PNG
Lower means a smaller file. 75 is a good default for photos.
100% in your browser Files are never uploaded.
Why convert PNG to JPEG XL?
For the same picture, JPEG XL usually lands well under the size of the PNG original. That matters when you are trimming page weight or squeezing under an upload limit.
PNG vs JPEG XL at a glance
| Property | PNG | JPEG XL |
|---|---|---|
| Compression | Lossless | Lossy |
| Transparency | Yes | Yes |
| Typical file size | 300-500% of an equivalent JPEG | 45-60% of an equivalent JPEG |
| Compatibility | Opens everywhere, including decades-old software | Safari and recent Chrome; still uncommon elsewhere |
| Usually comes from | Screenshots, logos and graphics | Long-term archives and photography workflows |
Frequently asked questions
Are my PNG 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.
My PNG is a screenshot — anything to watch for?
Screenshots are mostly flat colour and sharp text, which is what lossy formats handle worst. If the target is lossy, text edges can pick up faint halos. Use a high quality setting, or stay with PNG if the text has to remain crisp.
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.