MP4 → WebM Converter
Convert your MP4 videos to open-source WebM format. Optimized for the web.
Drop files here
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Other Popular Conversions
Convert your MP4 videos to AVI format.
Convert your MP4 videos to Apple MOV format.
Convert your MP4 videos to MKV format.
Convert your WebM videos to the common MP4 format.
Convert your old AVI videos to modern MP4 format.
Convert your Apple MOV videos to MP4 format. Play on any device.
Frequently Asked Questions
How to convert from MP4 to WebM?
All you need to do is drag your MP4 file into the upload area above and click the Convert button. The process happens locally in your browser and completes in seconds. Then you can download the converted file to your device.
Are my files private when uploaded to the converter?
Yes, absolutely. PRIZMA operates with a zero-server architecture. This means your uploaded files are never transferred to any server; the entire process happens in your own device's browser and memory. Therefore, your files are 100% secure and private.
Do I have to pay for this conversion process?
No, all conversion tools on our platform are completely free and can be used unlimitedly without requiring any registration or membership.