Convert WebP to AVIF
This is the optimizer's conversion: assets already in WebP, squeezed another 20–30% by stepping up to AVIF. On a media-heavy site that margin is real money and real milliseconds; on a handful of small files it's barely worth the encode time.
Open converterHow to convert WebP to AVIF
- 1
Open your best WebP
Pick the highest-quality WebP you have — and if the original PNG or camera file still exists, convert that instead; it skips a whole compression generation.
- 2
Encode at a sensible quality
This is often a third lossy pass, so stay moderate on the slider and let the AV1 encoder take its second or two per image.
- 3
Compare before you commit
After Convert & download, check both sizes: large photos usually save 20–30%, but a hard-crushed WebP may barely budge — keep whichever file is smaller.
Why convert WebP to AVIF?
-
AVIF typically beats WebP by another 20–30% on photographic content at equal visual quality.
-
Gradient-heavy images band less in AVIF than in WebP at aggressive compression levels.
-
Transparency carries over directly — both formats support full alpha.
-
If your pipeline already serves modern formats, swapping WebP for AVIF needs no markup changes.
What actually happens to your file
Be aware this is usually a third generation of lossy compression: the original capture, the WebP encode, and now AVIF. The chain is fine when each step is done at reasonable quality, but it means you should convert your best WebP — not one that was already crushed to the byte. If the original PNG or camera file still exists, encoding AVIF from that source will always beat converting the WebP. Sanity-check the result too: for small files or already-aggressive WebPs, AVIF sometimes saves only a few kilobytes, and skipping the conversion is the right call.
Frequently asked questions
Is converting WebP to AVIF actually worth it?
For large photographic assets, usually — 20–30% savings compound across a page. For icons, small thumbnails, or WebPs already compressed hard, the gain can be negligible. Check the before/after sizes and keep whichever is smaller.
Doesn't re-compressing a lossy WebP damage it?
Each lossy generation costs a little fidelity. At moderate quality settings the loss is invisible in practice. If you still have the original source image, convert that to AVIF instead for the cleanest result.
Does transparency survive WebP to AVIF?
Yes — both formats store full alpha channels, so transparent logos, stickers, and cut-outs convert without flattening.