How it works
- Drop your WebP files here, or select a whole folder.
- Each WebP is decoded and re-encoded as AVIF — right in your browser.
- Adjust the quality slider; AVIF encoding takes a little longer than WebP.
- Download the AVIF files individually, or as one ZIP.
If a site already switched to WebP and is now eyeing AVIF for another 20-30% off file size, it's worth asking first: is the gain worth a second lossy generation? WebP already re-encoded the image once; converting to AVIF re-encodes it again, discarding a small additional amount of detail neither step can recover. For large hero images and high-traffic pages, the extra saving is often worth it. For everything else, it may not be. This tool converts entirely in your browser either way — no upload, no server, and the decision stays yours to make with the numbers in front of you.
Why use convert.pics?
- The smallest file size of any format offered here, for the pages where it matters.
- No upload: both re-encoding steps happen entirely on your device.
- Batch conversion to test the size savings across a whole image folder at once.
- No account, no watermark, no daily limit.
Frequently asked questions
Is it worth converting WebP to AVIF?
For large, high-traffic images — hero banners, above-the-fold photos — usually yes, the extra size saving is meaningful. For small thumbnails or low-traffic pages, the gain is often too small to justify a second lossy re-encode; use your judgement per image rather than converting everything by default.
How much smaller is AVIF than WebP?
Typically another 10-20% smaller at comparable visual quality, on top of what WebP already saved versus the original JPG or PNG — though this varies significantly by image content.
Does converting WebP to AVIF lose quality?
Yes — this is a second lossy re-encode on top of whatever WebP's compression already did. At default quality it's usually not visible, but going WebP to AVIF is technically two generations of loss, not one.
Should I keep a WebP fallback for older browsers?
It's rarely necessary in 2026 — AVIF support across current browsers is now comparable to WebP's. A fallback only matters if a meaningful share of your visitors run genuinely old browser versions.
What if my WebP file is animated?
AVIF supports animation just like WebP does — but this tool's v1 still converts only the first frame of an animated WebP, flagged clearly in the result. The output won't loop even though the target format technically could.