WebP was a big step up from JPG and PNG, and AVIF goes further: for the same visual quality, AVIF files are often noticeably smaller than WebP. If your site already uses WebP, converting to AVIF is the next step for faster pages.
How to convert WebP to AVIF
- Drop your WebP files in the box above, or click to pick them. You can add as many as you like.
- AVIF is already selected as the output format. Switch on other formats if you want them too.
- Optional: open Advanced Settings to resize by percentage, width or height, and add more sizes.
- Click Start Conversion, then download each file or all of them at once. Nothing is uploaded: the conversion runs in your browser.
Why convert WebP to AVIF?
Every kilobyte counts on mobile connections. AVIF keeps transparency like WebP, renders smooth gradients with fewer artifacts and is supported by all major browsers. You can keep WebP as a fallback for the few browsers that lack AVIF.
Frequently asked questions
How much smaller is AVIF than WebP?
It depends on the image, but AVIF is frequently around 20% smaller than WebP at a similar quality, sometimes more on photos with gradients.
Will transparency be preserved?
Yes. Transparent areas in your WebP files remain transparent in AVIF.
Are my images uploaded?
No. The conversion runs entirely in your browser, on your device. Your images are never uploaded to a server, so this works for private and confidential files too.