Image to AVIF Converter
Convert JPG, PNG and WebP to AVIF, the most efficient format modern browsers display, at roughly half the weight of JPG. Encoded locally in your browser; nothing is uploaded.
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Processed locally on your device. No image bytes are sent to any server.
Where AVIF pays off, and where it does not
AVIF is built on the AV1 video codec and compresses photographic detail dramatically better than JPG: large hero images, full-width banners and photo galleries are where it shines, routinely halving transfer size against an already optimized JPG. It also supports full transparency and wide color. The costs are slower encoding and less support in non-browser software; treat AVIF as a delivery format for your website, not as the master copy you archive or hand to a print shop.
A sane rollout: convert your five heaviest images first, check the size badges above, and ship them with a fallback if your audience includes very old browsers. Keep originals. For interface graphics and small icons the wins are modest; spend the effort on the photos that dominate your Largest Contentful Paint instead.
Image to AVIF FAQ
How much smaller is AVIF than JPG or WebP?
AVIF photos are typically about half the size of an equivalent JPG and 10 to 30 percent smaller than WebP at comparable visual quality. It is currently the most efficient format every modern browser can display, which makes it the best target for large hero images and bandwidth-critical pages.
Why is the AVIF option hidden in my browser?
Encoding is the catch. Chrome, Edge and Firefox can create AVIF files from this page; Safari can display AVIF but cannot yet encode it, so on Safari the tool hides the AVIF output button rather than pretending. Every option you see here is feature-detected and real. To encode AVIF on a Mac, open this page in Chrome or Firefox.
Can all browsers display the AVIF files I create?
Yes, all current ones: Chrome and Edge since 2020-2021, Firefox since 2021, Safari since 16.4 in 2023. For a public website, that covers the overwhelming majority of visitors. If you must support years-old browsers, serve AVIF through a picture element with a JPG or WebP fallback.
What quality setting works for AVIF?
AVIF holds up at lower quality settings than JPG: 60 to 75 on the slider already looks clean for most photos, and that is where the dramatic size wins live. Start at 70, compare, and only raise it if you see banding in smooth gradients or softness in fine texture.
Does AVIF encoding in the browser upload anything?
No. Your browser’s built-in AVIF encoder does the work on your device; no image bytes leave it. Encoding AVIF is heavier than JPG or WebP, so large batches take longer; the tool converts files through a bounded queue so the page stays responsive.
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