JXL to AVIF converter
Turn JXL files into AVIF for free. The conversion runs entirely in your browser, so your pictures are never uploaded anywhere.
How to convert JXL to AVIF
- Add your JXL files. Drop one or more .jxl files on the box above, or tap it to pick them from your device.
- Let it convert. Each picture is converted to AVIF in about a second, right in your browser.
- Download the AVIF. Press Download next to each file. Nothing was sent to a server, so close the tab and it's gone.
What is a JXL file?
JPEG XL (JXL) is a modern image format designed to replace JPEG. It compresses better than JPG, supports lossless, HDR and transparency, and can repack existing JPGs without loss.
What is AVIF?
AVIF is a next-generation image format based on the AV1 video codec. It often makes files half the size of JPG with better detail, plus HDR, wide color and transparency.
Why convert JXL to AVIF?
JXL is great for excellent quality per byte and true lossless mode, but Chrome, Edge, Firefox and most apps can't open JXL yet, so you often need a JPG or PNG copy. AVIF is the better choice for the smallest files for the quality, ideal for fast websites; keep in mind many desktop apps, older phones and social media uploaders still can't open AVIF.
Will I lose quality?
AVIF uses lossy compression tuned so the difference is invisible at normal use. We use high-quality settings by default, and you can raise the quality slider before converting.
Private by design
Most online converters upload your file to their servers. This one doesn't: the converter itself is loaded into your browser and works offline from there, so your pictures never leave your phone or computer.
Questions
Is this JXL to AVIF converter free?
Yes, completely free, with no sign-up, no watermark and no daily limit.
Are my JXL files uploaded?
No. The conversion happens inside your browser on your own device. Nothing is sent to us or anyone else.
Can I convert JXL to AVIF on iPhone or Android?
Yes. It works in Safari, Chrome and other modern browsers on phones and tablets.
Can I convert several files at once?
Yes. Drop as many as you like; they are converted one after another and each gets its own download button.
Is there a file size limit?
No fixed limit. Very large pictures (100+ megapixels) may be slow on phones.