Convert WebP to AVIF
Free online WebP to AVIF converter. Drag and drop files, convert in batch, and download, without ever uploading to a server.
Why convert WebP to AVIF?
If you already use WebP, moving to AVIF can still reclaim more bytes on photo-heavy pages. Convert WebP to AVIF locally before uploading to object storage or a static site.
Tips
- Re-encoding is lossy-on-lossy; start from the highest-quality source you have.
- Use quality around 50. Re-encoding an already-tiny WhatsApp/WebP at quality 80+ often gets larger, not smaller.
Diminishing returns on a file that's already well compressed
The biggest size wins from switching formats come from starting with an uncompressed or lightly compressed source. If your WebP was already squeezed down hard (a small file for messaging or a thumbnail, for example), converting it to AVIF has less left to trim, since most of the redundant detail is already gone. You may see the AVIF come out barely smaller than the WebP, or occasionally slightly larger at a matching quality setting. For the biggest AVIF savings, start this conversion from the least-compressed version of the image you have.
Frequently asked questions
How do I convert WebP to AVIF?
Drop your WebP file into the converter above, adjust the quality if needed, and click "Convert to AVIF". The conversion happens entirely in your browser. Your file is never uploaded to any server.
Is the WebP to AVIF conversion lossless?
AVIF is a lossy format. Quality is controllable from 1-100% (default 50%); at recommended settings the result is visually close to the source for most photos.
Is there a file size limit?
The tool can handle files up to about 20 MB per image. Since processing happens in your browser, the practical limit is your device's available memory. Most modern devices can comfortably batch-convert dozens of images at once.
Are my WebP files uploaded to your servers?
No. All WebP to AVIF conversion happens entirely client-side. Conversion uses the Canvas API. Your files never leave your browser.