AVIF achieves 20 to 50% better compression than WebP at the same visual quality. Improve Core Web Vitals and reduce bandwidth. Runs entirely in your browser.
20-50%
Smaller than WebP
Batch
Multiple Files
Instant
Conversion
Private
No Uploads
AVIF encoding is compute-intensive. Conversion may take 5 to 30 seconds per image. All processing runs in your browser.
Drop WebP files here or click to browse
All processing stays in your browser. Nothing is uploaded.
WebP was Google's answer to JPEG back in 2010. It works well and has near-universal browser support. AVIF came later, built on the AV1 video codec, and it delivers meaningfully better compression. The tradeoff is encoding speed. AVIF takes longer to encode but the resulting files are smaller, which means faster delivery for every visitor.
High-traffic websites
The bandwidth savings from AVIF over WebP add up quickly. A site serving 100,000 images per day saves significant CDN costs by switching.
Core Web Vitals improvement
Smaller AVIF files reduce LCP (Largest Contentful Paint) times compared to WebP. Google uses LCP as a ranking factor.
Mobile performance
Smaller files load faster on mobile connections. AVIF's compression advantage is most noticeable on 4G and slower connections.
E-commerce product images
Product photo grids with many images benefit most from AVIF's per-image savings multiplied across the full catalogue.
Read more about how format choices affect your site in the Core Web Vitals and image compression guide.
WebP was a genuine improvement over JPEG when Google released it in 2010. It offered 25 to 34% smaller files at comparable quality and it eventually won broad browser support after a decade of slow adoption. For most websites through most of the 2010s, converting to WebP was the right call and it still is if you're currently serving JPEG. But if you're already on WebP and wondering whether AVIF is worth the migration, the answer depends on how much you care about the last 15 to 30% of file size savings.
AVIF is built on AV1, the same codec that powers high-quality streaming video at low bitrates. It was designed from the start to achieve better compression than anything that came before it, and it delivers on that promise. A WebP image at quality 80 and an AVIF image that looks visually identical typically differ by 15 to 30% in file size, with AVIF being smaller. For a blog or small website, that difference is modest. For a platform serving millions of images daily, it's substantial in CDN costs and bandwidth.
The honest limitation of AVIF is how long it takes to encode. WebP encodes fast enough that you barely notice it. AVIF can take 5 to 30 seconds per image in a browser, depending on image size and device speed. On a modern laptop with a fast processor, a typical web image takes 3 to 8 seconds. On an older phone, it can take much longer.
For one-off conversions this is fine. For batch converting a product catalog of 500 images, it's slow. In that case, server-side tools like libavif or ImageMagick with AV1 support handle the encoding much faster than a browser can. This converter is best suited for individual images or small batches where you want a quick result without installing anything.
AVIF at 95% browser support means 5% of visitors on older browsers won't see the image at all if you serve only AVIF. The solution is the HTML <picture> element, which lets you offer AVIF first and WebP as a fallback. The browser picks the best format it supports automatically. You get AVIF for modern browsers and WebP for everything else. This two-format approach gives you the full compression benefit without dropping support for any user.
AVIF achieves 20 to 50% better compression than WebP at equivalent visual quality. If you are serving images on a high-traffic website, switching from WebP to AVIF can significantly reduce bandwidth costs and improve page load times. AVIF also has 95% browser support as of 2025.
For most photographs, AVIF will be 15 to 30% smaller than an equivalent WebP at the same quality level. The savings are larger for complex images with fine detail and smaller for simple flat-colour images.
AVIF encoding is compute-intensive because it uses the AV1 codec. Expect 5 to 30 seconds per image depending on image size and your device's speed. The converter uses speed 8 (fastest) by default which produces files only about 5% larger than the slowest setting while being around 10 times faster.
AVIF has approximately 95% browser support as of 2026, covering Chrome, Firefox, Safari and Edge. Some older browsers and image processing tools may not support it. If compatibility is a concern, keep WebP as your format or use the picture element to serve AVIF with a WebP fallback.
No. All conversion happens in your browser using WebAssembly. Your files never leave your device.
Yes. Drop multiple WebP files or select them from the file picker. Each file converts independently. Download them individually or as a ZIP archive.
JPG to AVIF
Convert JPEG directly to AVIF. Up to 50% smaller than JPEG.
PNG to AVIF
Convert PNG to AVIF for 60 to 80% smaller files with transparency preserved.
AVIF to WebP
Going the other direction? Convert AVIF to WebP for wider compatibility.
WebP vs AVIF comparison
Full comparison of both formats including compression, quality and support.
