Convert MP4 to WEBM Online Free
Convert MP4 to WEBM instantly in your browser. No uploads needed - your files stay private on your device.
drag & drop files here
or click to browse
images, videos, audio, documents - all processed locally
Why convert MP4 to WEBM?
- ✓WEBM may offer better compatibility with your target platform
- ✓Optimize video for web streaming or social media
- ✓Reduce file size while maintaining acceptable quality
- ✓Prepare video for specific devices or players
How to convert MP4 to WEBM
Upload your file
Drag and drop your MP4 file onto the converter, or click to browse your files.
Select WEBM as output
Choose WEBM from the format dropdown. The converter will automatically detect your file type.
Convert instantly
Your file is processed entirely in your browser using WebAssembly. No upload needed.
Download your file
Click the download button to save your converted WEBM file.
About MP4 format
MP4 is the most widely used video container format, supporting H.264/H.265 video codecs and AAC audio. It offers excellent compression while maintaining high quality, making it the standard for streaming, downloads, and video sharing. Nearly every device, platform, and media player supports MP4 playback.
Pros
- +Universal device and platform support
- +Excellent compression with H.264/H.265
- +Supports subtitles and multiple audio tracks
Cons
- -Lossy compression affects quality
- -Editing can be complex without re-encoding
- -Some advanced codecs may not play everywhere
About WEBM format
WebM is an open, royalty-free video format designed specifically for the web. It uses VP8/VP9 video codecs and Vorbis/Opus audio, offering efficient compression for streaming. WebM is supported by all modern browsers and is the preferred format for HTML5 video when licensing concerns matter.
Pros
- +Royalty-free and open source
- +Excellent web browser support
- +Efficient compression for streaming
Cons
- -Less device support than MP4
- -Not widely supported on iOS
- -Limited editing software support