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Convert JPG Images to AVIF

Processed entirely in your browser. Never uploaded to a server.

Drop JPG images here or click to browse

Processed entirely in your browser. Never uploaded to a server.

AVIF is the most efficient still-image format with broad browser support, typically landing well under both JPG and WebP at the same visual quality. It's worth reaching for when you're serving images to a lot of people and the bytes cost you money or load time.

Expect this one to take a while

The encoder is a WebAssembly build of libavif and it's about three megabytes, downloaded once on your first conversion. AVIF encoding is also slow by nature — it inherits AV1's expensive search — so a large photo can take a few seconds per file. All of it runs on your device; nothing is uploaded.

FAQ

How much smaller is AVIF than JPG?
Commonly 30-50% smaller at comparable visual quality, and the gap is widest on photographs and on images with large smooth gradients, which is exactly where JPEG shows banding. Flat graphics and screenshots benefit less.
Why is encoding so much slower than converting to WebP?
AVIF encoding is genuinely expensive — it's built on the AV1 video codec, and the search it performs to find a good encoding is far more work than JPEG or WebP does. A large photo can take several seconds. That's the encoder working, not the page hanging.
Can every browser display AVIF?
Current versions of Chrome, Firefox, Safari, and Edge all do. Older browsers and a lot of non-browser software do not, so serve AVIF through a element with a JPG or WebP fallback rather than replacing your originals outright.
Should I convert my photo library to AVIF?
Probably not. AVIF earns its keep for images you're serving over a network, where bytes cost you something. For archival originals, the compatibility risk and the loss from re-encoding an already-lossy JPG outweigh the disk savings.

Landed on an AVIF you can't open? Use AVIF to JPG.

Want the safer, faster, better-supported option? Try PNG to WebP or Compress Image.

Want to know why AVIF gets so small? Read AVIF explained. Before converting to AVIF, check where it will and won't actually open.