Convert WebP to AVIF
Both formats exist to make web images smaller, and both are royalty-free. AVIF is the newer of the two and generally wins on compression — particularly on photographs and smooth gradients, where WebP starts to show its age.
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Why Convert WebP to AVIF?
WebP is built on VP8 intra-frame coding from 2010; AVIF uses AV1 from 2018. The generational gap shows in the numbers: AVIF typically produces files 20-40% smaller than WebP at matched visual quality, with the biggest gains on photographic content and gradients where WebP tends to band.
Browser support is no longer the deciding factor it was. Chrome, Firefox, Edge, Opera and Safari all display AVIF, so the practical reason to keep WebP is a long tail of older clients rather than any current mainstream browser.
Both are lossy, so this conversion decodes and re-encodes once. Where you still hold the original PNG or JPEG the WebP was made from, encoding AVIF from that instead avoids stacking two lossy passes — worth doing for a site's hero images even if it is impractical for a whole library.
How to Convert WebP to AVIF
- Upload your WEBP file.
- MiConvert converts it to AVIF, aiming to preserve what makes AVIF useful: noticeably smaller files than PNG or JPG at comparable quality.
- Download the converted AVIF file.
- Use it directly with modern browsers (Chrome, Firefox, Edge, Safari).
Key Features of MiConvert WEBP to AVIF
- Typically 20-40% smaller than the equivalent WebP
- Supported by every current major browser
- Transparency preserved through the conversion
- Quality-80 AV1 encoding tuned for web delivery
- Free for files up to 50MB, 100MB with an account
Video Tutorial
Watch this step-by-step tutorial to learn how to convert WEBP files to AVIF format online for free using MiConvert.com. No software installation required.
Frequent Questions
How can I convert a WebP file to an AVIF file?
Upload the WebP above and choose AVIF. Encoding runs at quality 80, which keeps files small without visible artefacts.
Which is better, WebP or AVIF?
AVIF for compression, especially on photographs — smaller files at the same visual quality, and no banding in gradients. WebP for the widest possible compatibility and noticeably faster encoding. For a modern website, AVIF with a WebP or JPEG fallback covers both.
Can I change a WebP file to JPEG?
Yes, the same converter offers JPG. That is the right choice when the destination is not a browser — email, print, older desktop software and upload validators all handle JPG and often reject both WebP and AVIF.
How can I convert files to AVIF for free?
This page converts JPG, PNG, WebP, HEIC, TIFF and more to AVIF at no cost, with no watermark.
Will transparency be preserved?
Yes. Both formats support an alpha channel, so transparent areas carry over intact.
What about animated WebP?
AVIF supports animation, but the conversion here handles still images and takes the first frame of an animated source. For animation, keep the WebP or use MP4.