Trim WebM Online Free
WebM files are the web's native video format - lightweight, open, and royalty-free. JustTrimVideo handles WebM natively, letting you trim your videos directly in the browser without conversion or re-encoding.
What is WebM?
WebM is an open, royalty-free video format designed specifically for the web. It uses VP8, VP9, or AV1 video codecs with Vorbis or Opus audio. WebM files are typically smaller than MP4 at similar quality, making them ideal for web content.
Common Sources of WebM Files
Screen Recordings
Chrome and Firefox save screen captures as WebM
Browser Downloads
Many websites serve video in WebM format
Video Converters
Tools often output WebM for web optimization
Web Applications
Browser-based recording tools use WebM
How to Trim WebM Files
- 1 Select your WebM file
Click "Choose File" and select your WebM video. Processing happens locally.
- 2 Set your trim points
Use keyboard shortcuts (I/O) or enter times manually. WebM preview works in all modern browsers.
- 3 Download your trimmed WebM
Output stays in WebM format with identical quality - no re-encoding needed.
WebM Advantages
- Excellent browser support: Chrome, Firefox, Edge, and Opera all play WebM natively
- Small file sizes: VP9 codec offers great compression, often 30-50% smaller than H.264
- Royalty-free: No licensing fees, unlike some video codecs
- Open source: Part of the open web, backed by Google and others
Safari Compatibility Note
Safari has limited WebM support (only VP9 on macOS Big Sur and later, no VP8). If you're editing on Safari and the preview doesn't work, you can still enter trim times manually - the trimming will work correctly.
WebM vs MP4
| Feature | WebM | MP4 |
|---|---|---|
| File size | Smaller (VP9) | Larger (H.264) |
| Browser support | Most browsers | Universal |
| Mobile support | Limited on iOS | Universal |
| Licensing | Royalty-free | Patented codecs |
Ready to trim your WebM?
Go to the Video Trimmer →