MP4 to WebM converter

Convert MP4 video to WebM right in your browser — no upload, no sign-up, completely free. Drop your file and download the result in seconds. Everything is processed on your own device and never sent to a server.

MP4 (H.264/H.265) is the most universally compatible video format. It plays on virtually every device, app and platform, which makes it the safe default for sharing. WebM (VP9/AV1) is an open, royalty-free video format built for the web. It often produces smaller files than MP4 at the same quality and is supported by all modern browsers. WebM is an efficient, royalty-free format built for the web and supported by all modern browsers.

How to convert MP4 to WebM

1. Add your MP4 video. Drag your MP4 file onto the drop zone or click to browse.
2. Convert. Your video is converted to WebM on your device. Larger files take a little longer.
3. Download your WebM file. Save the converted WebM video straight to your device.

Features

• Private by default. Your video is converted in the browser and never uploaded.
• Plays everywhere. WebM is widely supported, so the result plays where you need it.
• No watermark. The converted file is clean — no logo or watermark added.
• Free to use. No sign-up and no cost.

When to use it

• Convert MP4 to WebM for a device or platform that won’t play MP4.
• Make MP4 footage easier to share by converting it to WebM.
• Prepare video for efficient, royalty-free video for websites.
• Convert a clip from your phone or camera without installing any software.