uDocumentViewer
Convert.webp

Convert WebP to AVIF online

100% localFiles never leave your device — no upload, no account, no tracking.
About WebP to AVIF

Convert WebP images to AVIF, which often shaves off another 10–20% at the same quality. Pick a quality level and we re-encode locally — handy for squeezing the most out of your web image budget.

Encoding runs entirely in your browser via WebAssembly. The WebP file you drop in never leaves your device.

How it works
  1. 01

    Add a WebP

    Drop your WebP file onto the page or pick it from your device.

  2. 02

    Set quality

    Choose the AVIF quality level to balance size and detail.

  3. 03

    Convert

    Click Convert to encode an AVIF locally in your browser.

  4. 04

    Download

    Save the AVIF image.

Features
next-gen formatsmaller filesadjustable quality
Frequently asked
How does the WebP to AVIF converter work?
Convert WebP images to AVIF, which often shaves off another 10–20% at the same quality. Pick a quality level and we re-encode locally — handy for squeezing the most out of your web image budget.
Are my files uploaded to a server?
No. Everything runs entirely in your browser using local JavaScript and WebAssembly. Your files never leave your device.
Does it cost anything or require an account?
No. The converter is free, needs no sign-up, and runs locally in your browser.
Related converters
Open these files in a viewer