Convert MP4 to WebM Online
Convert MP4 videos to WebM format for modern web delivery. WebM offers excellent compression and is the standard format for HTML5 video on the web.
Launch MP4 to WebM ConverterHow to Convert MP4 to WebM
- 1
Open the Video Converter in the workspace.
- 2
Upload your MP4 video file.
- 3
Select WebM Video (.webm) as the output format.
- 4
Convert and download your WebM video optimized for the web.
Why Use Smart Converter for MP4 to WebM Converter
100% Private
All conversions happen directly in your browser using WebAssembly. Your files never leave your device.
No File Size Limits
Since processing is local, your only limit is your device's available memory. No arbitrary upload caps.
Lightning Fast
No upload or download times. Processing starts immediately with optimized WebAssembly codecs.
Completely Free
No hidden charges, no premium tiers, no usage limits. All features are available to everyone.
Frequently Asked Questions
Is WebM better than MP4?
WebM uses VP8/VP9 codecs which often achieve better compression than MP4's H.264 at the same quality. WebM is also royalty-free.
What browsers support WebM?
Chrome, Firefox, Opera, and Edge support WebM natively. Safari added WebM support in recent versions.
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