AVIF Converter
Convert images to AVIF format with adjustable quality for the smallest modern web file sizes.
AVIF Converter
Convert images to AVIF format with adjustable quality for the smallest modern web file sizes.
About the AVIF converter
Quality controls for modern web images
AVIF output is generated from the decoded bitmap in a browser Web Worker. The quality selector changes the encoder quality, while the maximum-width option can reduce large originals before encoding so you can balance smaller files against visual detail.
Encoding support depends on the browser
This is a single-file browser converter, not a server-side AV1 pipeline. If the browser cannot decode the input or encode image/avif through OffscreenCanvas, conversion may fail or take longer than JPG/WebP; use the exported file with WebP or JPG fallbacks for older clients.
FAQ
Common questions and answers about this topic.
Are my images uploaded to a server?
No. All conversion runs entirely in your browser inside a Web Worker. Your images never leave your device.
Why use AVIF instead of WebP or JPG?
AVIF uses the AV1 codec and produces files roughly 50% smaller than JPG and 20% smaller than WebP at equivalent quality. Some AVIF workflows can carry wider color or HDR data, but this tool focuses on browser bitmap conversion, so color-managed or HDR production assets should be verified in your own pipeline. The trade-off is that encoding is slower and older browsers (pre-2022) cannot display AVIF, so it is best suited to performance-critical sites that can fall back to WebP/JPG via the <picture> element.
Is AVIF supported on all browsers?
AVIF is supported in Chrome 85+, Firefox 93+, Safari 16.4+, and Edge 121+. Older browsers (Internet Explorer, Safari before 16.4) cannot display AVIF. For maximum compatibility, serve AVIF via a <picture> element with WebP and JPG fallbacks.