Video to WebM
Convert video files to WebM for web-optimized, royalty-free playback with VP8 or VP9.
No watermarkFree & unlimited
Processed on our servers and deleted right after. Never stored or shared.
About this tool
- 1
Upload your video
Select the video file you want to convert to WebM format.
- 2
Configure quality
Adjust the bitrate or quality slider to balance file size and visual fidelity.
- 3
Convert
Start the conversion process. Duration depends on the source video length.
- 4
Download WebM file
Save the converted WebM video to your device.
- WebM with VP9 codec offers excellent compression - often 30-50% smaller than H.264 MP4 at similar quality.
- WebM is natively supported in Chrome, Firefox, and Edge, making it ideal for web embedding.
- Lower the bitrate for web-optimized videos where fast loading matters more than maximum quality.
- Safari support for WebM is limited on older versions - provide an MP4 fallback for full compatibility.
- Convert any video format to WebM container
- VP9 codec for superior compression efficiency
- Adjustable quality and bitrate settings
- Maintains audio with Opus codec
- Ideal for HTML5 video embedding on websites
- Optimize videos for fast loading on websites and web applications
- Convert MP4 or MOV files to WebM for open-format compatibility
- Reduce video file sizes for bandwidth-constrained hosting
- Prepare video assets for progressive web apps
WebM is supported in Chrome, Firefox, Edge, and recent Safari versions. For older Safari, provide an MP4 fallback.
The tool uses VP9 for video and Opus for audio, which provide excellent quality-to-size ratios.
There is always some quality change when transcoding between formats. The quality slider lets you minimize loss by choosing a higher bitrate.