Convert WebP to AVIF

WebP to AVIF: the quick version

WebP to AVIF, done in your browser. Convert.diy converts your WebP files to AVIF instantly — no uploads, no watermarks, no sign-up, and no limit on how many you convert. Because everything runs locally with WebAssembly, your files never touch a server.

WebP is a modern Google format that keeps quality high while cutting file size 25–35% below JPG and PNG, with transparency support. AVIF is the newest high-efficiency image format, built on the AV1 codec. It delivers the smallest files at a given quality of any mainstream format.

People usually convert WebP to AVIF for the smallest possible web images. Drop your files below, pick your quality, and download — it takes seconds.

How to convert WebP to AVIF

Add files

Drop your WebP file(s) into the box above, or click to browse. Add as many as you like.

Convert

Pick AVIF and adjust quality, then click Convert. It runs instantly on your device.

Download

Download each AVIF, or all of them as a single zip.

Frequently asked questions

Is the WebP to AVIF converter free?

Yes — it’s completely free with no limits, no watermarks, and no account required. Convert as many WebP files as you want.

Are my files uploaded to a server?

No. Conversion happens entirely inside your browser using WebAssembly, so your WebP files never leave your device. Nothing is uploaded, stored, or seen by anyone.

Can I convert multiple WebP files at once?

Yes. Add as many files as you like and convert them in one batch, then download them together as a zip.

Why convert to AVIF?

AVIF produces significantly smaller files than JPG or PNG at the same visual quality, which makes web pages load faster.

Does it work on my phone?

Yes. Convert.diy works in any modern browser on iPhone, Android, Windows, Mac and Linux — no app to install.