What's the difference between JPEG XL and AVIF?

JPEG XL is a modern, royalty-free image format with state-of-the-art compression. AVIF is the newest mainstream image format, built on top of the AV1 video codec.

What quality should I pick?

For AVIF, quality 75-85 is the sweet spot — small files with no visible difference from the original. Lower than 60 starts to show artifacts. Higher than 90 mostly just makes the file bigger.

When is AVIF the right format?

AVIF is a good choice for: hero images and other content where every byte matters; build-time image pipelines that can absorb the encoding cost; photos with smooth gradients (the AV1 codec excels here). It is a poor choice when on-the-fly conversion where the user is waiting (slow encode).

Anything surprising about JPEG XL or AVIF?

JPEG XL can recompress a JPEG losslessly ~20% smaller and restore the exact original. And on the AVIF side: AVIF encoding is single-threaded by default — large images can take 5–10 seconds in browser.

Does this work on mobile?

Yes. The drop zone falls back to your phone's file picker, and conversions run on-device just like desktop. Large files may be slower on mobile due to CPU and memory constraints, but the workflow is identical.

What's the maximum file size?

No hard limit — the browser handles it. Files under 50MB convert in a few seconds. Larger files work but may take longer as the browser allocates memory. If you hit issues, batch in smaller groups.

Convert JPEG XL to AVIF

Convert JPEG XL to AVIF, typically the smallest of the modern web formats. JPEG XL is already efficient; this is usually about compatibility rather than size. Free, in your browser.

Drop images to convert

PNG, JPG, WebP, AVIF, JPEG XL, TIFF, BMP, GIF, SVG, HDR, ICO — any combination

Files stay on your device. Open DevTools' Network tab to verify.

Output format

AVIF

Quality82%

Overview

Why convert JPEG XL to AVIF

AVIF is a more practical choice than JPEG XL for most modern workflows: hero images and other content where every byte matters. Coming from JPEG XL, the thing to know is that broad web delivery today (inconsistent browser support).

Comparison

JPEG XL vs AVIF: what actually differs

JPEG XL compared with AVIF across encoding, fidelity, file size and support.
Attribute	JPEG XL	AVIF
Compression	Lossy or lossless	Lossy
Transparency	Yes	Yes
Animation	Yes	Yes
Typical file size	Small	Small
Browser support	Limited — Safari 17+ supports it; Chrome and Firefox are still behind flags or pending. Great for archival and apps that control their own decoder.	Supported in Chrome, Firefox, Safari 16+, and Edge. Pre-2022 devices may not decode it.

How to

How to convert JPEG XL to AVIF

01
Drop your JPEG XL files
Drag one or more JPEG XL files onto the dropzone above, or click to browse. Files stay on your device — nothing uploads.
02
Convert in your browser
convert.now decodes each JPEG XL and re-encodes it as AVIF via WebAssembly. The conversion runs in a Web Worker so the page stays responsive.
03
Download the result
Download a single AVIF file or, for batch conversions, a zip of all converted files. Filenames preserve the originals.

Why here

Why convert.now

Private
Files stay in your browser. No upload step. Nothing for anyone to see.
Fast
No queue, no upload wait. Conversion starts the moment you drop a file.
Free
No ads. No file-count limit. No sign-up wall. Just the converter.

FAQ

JPEG XL to AVIF: common questions

No. The conversion from JPEG XL to AVIF runs entirely in your browser using WebAssembly. Files never leave your device. Open DevTools' Network tab if you'd like to verify — there are no network requests with file contents.

Related JPEG XL converters

Last updated 27 August 2026

Why convert JPEG XL to AVIF

JPEG XL vs AVIF: what actually differs

How to convert JPEG XL to AVIF

Drop your JPEG XL files

Convert in your browser

Download the result

Why convert.now

JPEG XL to AVIF: common questions

Related JPEG XL converters