Convert JPG to JPEG XL
JPEG XL stores the same visual quality as JPG in a noticeably smaller file, with a modern feature set. Convert JPGs to JXL for archival or for pipelines where you control the consumers.
Free · No signup · No upload — runs 100% in your browser
How to convert JPG to JPEG XL
- Open the converter and add your JPG files — drag & drop, paste from the clipboard, or pick a whole folder.
- Choose JPEG XL as the output format in the options panel and press Apply.
- Fine-tune quality or resize if you need to — files re-encode instantly.
- Download results individually, as a ZIP, or combined into a PDF.
About the formats
JPG
JPEG is the most universally supported image format in existence — every browser, app, device, and upload form accepts it. It uses lossy compression tuned for photographs. This converter encodes JPEG with MozJPEG, which squeezes out noticeably smaller files than standard encoders at the same visual quality.
JPEG XL
JPEG XL (JXL) is a next-generation format designed to replace JPEG, with both lossless and high-quality lossy modes and very fast decoding. Browser support is still limited (Safari leads), so it is best for archival and pipelines you control.
Frequently asked questions
Are my JPG files uploaded to a server?
No. The conversion runs entirely in your browser using WebAssembly codecs — your files never leave your device. After the first visit the converter even works offline.
Can I convert many files at once?
Yes — add as many files (or whole folders) as you like, convert them in one batch, and download everything as a single ZIP. There are no file-count or size limits.
Will I lose quality converting JPG to JPEG XL?
You stay in control: JPEG XL quality is adjustable in the options panel, and the defaults are tuned to be visually indistinguishable for typical images. You can re-convert with different settings instantly.