Convert JPG to AVIF

Convert JPG photos to AVIF, the AV1-based format that is often the smallest option for photos. Batch up to 100 files, locally in your browser.

Good to know

AVIF usually beats both JPEG and WebP on photos at the same visual quality, especially in smooth areas like skies.
AVIF encoding is slow: a 12-megapixel photo can take several seconds on a phone. The work runs in a background thread so the page stays usable.
Serve AVIF inside <picture> with a JPEG or WebP fallback for any browser that can’t display it.

Can visitors see AVIF?

For websites, the safe pattern is a <picture> element listing AVIF, then WebP, then a JPG fallback; each browser picks the first it supports. More in WebP vs AVIF.

Other converters: JPG to WebP · PNG to WebP · WebP to JPG · WebP to PNG · PNG to AVIF · AVIF to JPG

Questions

Why is the AVIF quality default lower?

AVIF’s quality scale differs from JPEG’s. An AVIF at 50–60 typically looks similar to a JPEG at about 80. Use Compare to judge by eye.

Are my files uploaded for conversion?

No. The conversion runs in your browser with WebAssembly codecs. Files never leave your device.