AVIF to WebM Converter - Animated AVIF to WebM Video Free

How to convert AVIF to WEBM

Add your AVIF files. Drop up to 20 AVIF files into the box. Animated ones show their frames under the preview.
Pick quality and speed. Balanced is the default. Change the speed or repeat the animation if you like.
Pick a background. Transparent areas get a colour. White is the default.
Make the WebM and download. Press Make my WebM. The video is encoded in your browser and downloads straight away.

Embedding it on a page? Use a video tag with autoplay, muted, loop and playsinline - it behaves like a GIF at a fraction of the size.

WebM is the open video format of the web.

A muted, looping WebM in a video tag replaces a heavy GIF at a fraction of the size, and every modern browser plays it.

Discord, Telegram and most HTML5 players handle it too.

Need an MP4 later? WebM to MP4 converts it. Test files are in the AVIF sample files.

Transparency becomes the background colour.
Repeat makes short animations last longer for players that do not loop.
Browser support - Chrome, Edge, Firefox and Safari 17 make videos. Keeping the animation needs Chrome, Edge or Firefox.

Drop the AVIF into the box, keep the Balanced quality and press Make my WebM. Every frame goes into the video with its original timing.

No. Your browser decodes the frames and encodes the WebM with WebCodecs, right on your device.

No - transparent areas get the background colour you pick. For a transparent animation use AVIF to WebP or AVIF to GIF.

Recent Safari versions play VP9 WebM, but for phones and social apps AVIF to MP4 is the safer choice.

Yes. A still image becomes a video of 3 to 60 seconds.

Video encoding needs WebCodecs - the latest Chrome, Edge, Firefox or Safari 17 and later.