mynify

WebP to AVIF. Even smaller.

Convert WebP images to AVIF, the most efficient web format — entirely on your device, nothing uploaded.

  • Never uploaded
  • No limits
  • No signup
  • Free forever

WebP to AVIF, in your browser

WebP already compresses well, but AVIF — the newest mainstream web format — usually goes further, often 20% smaller or more at similar quality, while keeping transparency. For sites squeezing every kilobyte for speed, re-encoding WebP assets to AVIF is a worthwhile final step. Mynify converts on your device with a WASM encoder, so nothing is uploaded.

The trade-off

AVIF is superbly efficient but newer than WebP. Every current browser displays it, yet some older desktop apps and email clients don’t. Use AVIF for web-facing images; keep WebP where you need the widest compatibility.

Good to know

AVIF encoding is more compute-intensive than WebP, so large images take a moment — it’s your device doing the work, which is exactly why it stays private.

Free, unlimited, no signup, no watermark — processed entirely on your device.

Frequently asked questions

Is AVIF smaller than WebP?

Usually, yes — AVIF is the most efficient common web format and often beats WebP by 20% or more at similar quality. Both keep transparency.

Does everything support AVIF?

All current browsers do, but AVIF is newer than WebP; some older software and email clients don't read it. Use it for the web, keep WebP for broader compatibility.

Is my image uploaded?

No — the conversion runs entirely in your browser using a WASM encoder; your file never leaves your device.

Related tools

JPG to AVIF PNG to AVIF Compress Image