WebM to MP4

WebM to MP4 Converter

Convert WebM recordings to MP4 directly in your browser. No uploads, no watermark, and no sign-up.

WebM conversion workspace

Make browser recordings easier to share and play everywhere.

Loading conversion engine...

How it works

1 Drop in a .webm recording.
2 The browser converts it to an MP4 file.
3 Download the MP4 and use it in editors, chats, or upload forms.

FAQ

Is my file uploaded anywhere?

No. The conversion runs in your browser with WebAssembly, so the selected file stays on your device.

Why can conversion take a while?

Large videos need to be decoded and encoded locally. Keep the tab open while the browser finishes the export.

Does the tool add a watermark?

No. The exported file is watermark-free.

Why convert WebM to MP4?

MP4 is accepted by more editing tools, upload forms, and messaging apps than WebM.

Want professional polish?

The browser tools are great for quick format work. Aufzeichna's desktop app is built for polished screen recordings with smooth cursor motion, cinematic zoom, and export control.

Check out the desktop app