Free · No signup · Nothing uploaded
Convert video to WebM
Create WebM videos for websites and web apps. WebM is open, royalty-free and compact, and VideoTouro makes it right in your browser.
Upload a video to convert to WebM
or drop a file here · MP4, MOV, WebM or MKV
Processed on your device. Nothing is uploaded.
WebM Converter: free, private and right in your browser
Create WebM videos for websites and web apps. WebM is open, royalty-free and compact, and VideoTouro makes it right in your browser.
- VP9 video with Opus audio
- Lossless copy when the source is already VP8/VP9/AV1
- Great for websites: small and royalty-free
- No watermark, no signup
- Private: processed on your device
How to use the webm converter
REC 00:42Step 01Choose your video
Select an MP4, MOV, MKV or other video.
MOV → MP4Step 02Convert
Click "Convert to WebM". VP9 sources are copied losslessly; others are re-encoded to VP9.
MOV → MP4Step 03Download
Save your WebM file and use it on your site.
Website background videos
WebM gives small, high-quality files for autoplaying hero videos.
Web apps
Use open formats in apps and games without licensing worries.
Smaller files
VP9 can be more efficient than H.264 at the same quality.
Frequently asked questions
Is my video uploaded?
No. Everything happens in your browser using your own device. Your video never leaves your computer or phone.
Does WebM work on iPhone?
Modern Safari plays WebM, but for maximum compatibility on older Apple devices MP4 is safer.
Why is my audio removed?
WebM uses Opus audio. If your browser can't encode Opus, the tool keeps the video and tells you the audio was dropped.
Is the conversion lossless?
Only if your video is already VP8, VP9 or AV1. Otherwise it is re-encoded at high quality.
Which browsers are supported?
Recent Chrome, Edge, Firefox and Safari (16.4+). The tool uses WebCodecs, your browser's built-in video encoder, and tells you before you start if something isn't supported.
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