Free MP4 to WEBM Converter

Convert MP4 to WEBM Online

Private MP4 to WEBM conversion powered by FFmpeg.wasm. No server upload, no watermark.

Frequently asked questions

How do I convert MP4 to WEBM online?

Upload your file to Convert.AI, select WEBM, and click Convert.

Is the conversion private?

Yes. FFmpeg runs entirely in your browser; files never leave your device.

What is the file size limit?

Free users can convert files up to 200MB.