Video Format Converter
Convert your video files between MP4 and WebM formats in your browser.
Drop your file here
or click to browse
On first use, a ~30 MB conversion engine is downloaded to your browser (one time only).
This file is processed in your browser and never uploaded to a server.
How It Works
1. Drop your file here
2. Processing…
3. Download
Features
- MP4 ⇄ WebM conversion
- Processed inside your browser
- No extra software needed
Frequently Asked Questions
- Are large video files supported?
- Yes, but processing time and memory use increase with file size depending on your device's power.
- Do I need internet during processing?
- Once the page loads, the conversion engine is downloaded to your device; the conversion itself can run in the browser without internet.