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WebP to AVIF Converter

Upgrade WebP images to AVIF and save an additional 15–25% in file size. Convert your existing WebP assets to the most efficient modern image format. Free, instant.

WebP to AVIF: is it worth upgrading?

If you already have WebP images, converting to AVIF can save an additional 15–25% in file size at equivalent quality. For a website serving millions of images per month, this reduction is significant. However, AVIF support (93% of browsers) is slightly lower than WebP (97%), so evaluate your audience's browser distribution before committing to AVIF-only delivery.

The recommended approach: serve both

Rather than replacing WebP entirely, use the HTML <picture> element to serve AVIF to browsers that support it and WebP as a fallback for the rest. This gives you maximum compression for modern browsers while maintaining compatibility for everyone.

Chrome and Firefox required for AVIF output

Safari can decode AVIF images but does not support AVIF encoding via the Canvas API. This tool requires Chrome 85+ or Firefox 93+ to produce AVIF output. If you're on Safari, the conversion will fail — switch to Chrome or Firefox.

Frequently asked questions

Typically 15–25% smaller at equivalent visual quality. For a website with 1,000 images averaging 100 KB each as WebP, converting to AVIF would save 15–25 MB of total image weight, which can meaningfully improve page load times.
Yes — converting between two lossy formats always introduces some additional quality loss. Using quality 80 for AVIF output minimizes this while achieving excellent compression. At quality 75+, the difference from the WebP source is imperceptible under normal viewing conditions.
No — keep your WebP files as fallbacks. Serve AVIF to compatible browsers and WebP to older browsers using the HTML <picture> element. Your WebP files serve about 4–7% of users that can't display AVIF.
Safari can display AVIF images but cannot encode them via the browser Canvas API. Use Chrome 85+ or Firefox 93+ to run this tool for AVIF output. If you're on Safari, convert to WebP instead — it still gives you 25% savings over JPEG and works in all modern browsers.