WebM .webm
An open web video container. Exports use VP8 video and Opus audio.
WEBM file format guideWEBM converter
Convert WebM files for free. Choose from 51 output formats, inspect file details and download your results. No account needed.
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Add files
Drag files here or choose them from your device.
Choose an output format
Open a conversion below or choose the output above. Add up to 100 files and download results separately or in a ZIP.
How to convert WEBM files
- Select WEBM files from your device or drag them into the converter.
- Choose your output format. Open conversion settings if you want to make adjustments.
- Convert, compare the original and result, then download your files.
Quality, compatibility and file limits
Trim a clip, resize the frame, or adjust playback speed before export. Video conversion re-encodes supported streams; subtitles, extra audio tracks, and container attachments are not preserved. Audio output requires an audio track in the input.
Processing uses your device when possible and our servers when required. Browser files are limited to 256 MB each; server conversions to 64 MB; browser spreadsheets to 32 MB. Previews show supported content and do not guarantee identical rendering in every application.