Convert JPG to JPEG XL
Free, unlimited JPG to JPEG XL conversion that runs entirely inside your browser. No upload, no sign-up, no watermark.
Convert your JPG files to JPEG XL
or drop them here, or paste with Ctrl+V · files never leave your device
Settings
Nothing queued yet. Add as many files as you like — everything runs on your own device.
Nothing is uploaded
Conversion runs in your browser. Your files never touch a server, so there is no copy of them to leak.
No sign-up, no watermark
No account, no email, no daily limit, and nothing stamped across your image.
Batch and folders
Drop a hundred files at once and download the results as a single ZIP.
Works offline
Once this page has loaded you can disconnect entirely and it still works.
This converter turns JPG images into JPEG XL files without uploading anything. The conversion runs inside this page using your own device's processor, so your photos never leave your computer — there is no server copy to worry about, no queue to wait in, and no limit on how many files you convert.
JPG is the lossy photographic format that has been the default for digital cameras and the web since 1992. Universal. If a program can open an image at all, it can open a JPG. JPEG XL, by contrast, safari supports it; Chrome and Firefox currently do not ship it by default. Treat it as a storage format, not a sharing one.
How to convert JPG to JPEG XL
- Add your JPG files. Drag them onto the box above, click to browse, or paste an image straight from your clipboard. You can add as many at once as you like.
- Adjust the settings if you need to. The defaults suit most images. Raise the quality slider if the image contains text or flat colour.
- Download the JPEG XL file. Each file gets its own download button as soon as it finishes, and you can pull the whole batch down as a single ZIP.
What changes when you convert JPG to JPEG XL
Every format conversion involves trade-offs, and vague tools hide them. Here is exactly what happens to your image in this particular conversion.
- Both formats are lossy, so the file is being re-compressed. We decode JPG at full fidelity and re-encode once at your chosen quality, which keeps generational loss to a minimum, but converting back and forth repeatedly will visibly degrade an image.
- JPEG XL is not yet decoded by Chrome or Firefox by default. It is an excellent archival format, but do not use it for images you need to send to other people or put on a website.
About JPEG (Joint Photographic Experts Group)
JPG is the lossy photographic format that has been the default for digital cameras and the web since 1992.
Where you probably got it: Photos from cameras, phones, and almost any website.
Strengths
- Opens in literally every image viewer, editor, printer and web form ever made
- Very small files for photographs, with a quality dial you control
- Hardware-accelerated decoding on every phone and camera
Limitations
- No transparency — transparent areas have to be flattened onto a solid colour
- Lossy: each re-save discards a little more detail permanently
- Blocky artefacts around sharp edges, text and flat colour
About JPEG XL
JPEG XL is a next-generation format designed to replace JPEG, with better compression and a truly lossless mode.
Support: Safari supports it; Chrome and Firefox currently do not ship it by default. Treat it as a storage format, not a sharing one.
Strengths
- Beats JPG substantially at every quality level
- Can losslessly recompress existing JPGs about 20% smaller
- Supports HDR, wide gamut, high bit depth and progressive decoding
Limitations
- Browser support is still limited and contested
- Very little support in consumer software
- Files you produce today may not open on someone else’s machine
Is it safe to convert JPG online?
Here, yes — and you can check rather than trust. Open your browser’s developer tools, switch to the Network tab and convert a JPG file: no request carrying your image is made. Disconnect from the internet after this page has loaded and the converter still works, which would be impossible if a server were doing the conversion.
That is worth verifying wherever you convert, because most online converters do upload, and JPG files are so often scans of passports, driving licences and signed forms, which is most of what gets converted to send somewhere. Once a file is on somebody else’s server you are relying on a privacy policy rather than on anything you can observe. We wrote up how to tell a safe converter from a risky one in more detail.
Frequently asked questions
How do I convert JPG to JPEG XL?
Drag your JPG file onto the box above, or click it to browse. The conversion starts immediately in your browser and the JPEG XL download appears within a second or two for most images. You can drop in a whole folder of files at once and download them together as a ZIP.
Are my JPG files uploaded to a server?
No. The conversion happens locally in your browser, so your files are never transmitted anywhere — the tool even works with the network disconnected once the page has loaded. That is also why there is no file size or file count limit: nothing costs us anything per conversion. The practical ceiling is your own device's memory, which on a phone means very large images may fail.
Will converting JPG to JPEG XL reduce the quality?
A little. Both formats are lossy, so the image is decompressed and re-compressed once. We decode at full fidelity and encode a single time at your chosen quality, so a one-off conversion is close to invisible — but avoid converting the same image back and forth repeatedly.
What is the difference between JPG and JPEG XL?
JPG is the lossy photographic format that has been the default for digital cameras and the web since 1992. JPEG XL is a next-generation format designed to replace JPEG, with better compression and a truly lossless mode. In practice the choice comes down to compatibility: universal. If a program can open an image at all, it can open a JPG. Meanwhile safari supports it; Chrome and Firefox currently do not ship it by default. Treat it as a storage format, not a sharing one.