Convert JPG to AVIF
AVIF is the best-compressing image format on the web today — typically 30–50% smaller than JPG at the same visual quality. Encode your images to AVIF locally, with no uploads and no limits.
100% private: files are processed in your browser and never uploaded to any server.
How it works
- Drop JPG, PNG or WebP files into the box above.
- Pick a quality level (50 is a good default — AVIF stays sharp at low values).
- Click Apply and download your AVIF files.
Good to know
AVIF is the best-compressing image format currently usable on the web — typically 40–50% smaller than JPG at the same visual quality, and further ahead still on photographs with smooth gradients, where it avoids the banding JPG produces.
Encoding is genuinely slow: the codec runs as a WebAssembly module on your machine and a large photo can take several seconds. That is the cost of the compression, not a bug. The quality scale is also not the same as JPEG's — 50 is a good starting point here, well below where you would set a JPG.
Supported by Chrome, Firefox, Edge and Safari 16+. Because coverage is high but not universal, the usual approach is a <picture> element with a WebP or JPG fallback so older browsers still get an image.
Read more: WebP and AVIF explained
Frequently asked questions
How much smaller is AVIF than JPG?
Typically 30–50% at equivalent visual quality, and even more for images with smooth gradients. The exact saving depends on the content.
Is AVIF supported everywhere?
All modern browsers (Chrome, Firefox, Safari 16+, Edge) display AVIF. Desktop apps and older software are more limited — keep the original if you need broad compatibility.
Why does encoding take a few seconds?
AVIF compression is computationally heavy — that is exactly why it compresses so well. Encoding runs in a WebAssembly module on your device; large photos can take several seconds each.
Does AVIF keep transparency?
Yes — converting a transparent PNG to AVIF preserves the alpha channel while reducing the size dramatically.