Choose your file
Add one supported file.
ON YOUR DEVICE
Convert video
Convert MP4, MOV, MKV and WebM files to MP4 or WebM.
Drop your file here
One file · Device-dependent capacity · Best for short clips
Files stay on your device
Three simple steps
Choose MP4 or WebM
MP4 uses H.264 video and AAC audio. WebM uses VP8 video and Vorbis audio.
Check and download
Preview the result and save your copy. Keep your original file.
Common questions
Will subtitles and extra tracks remain?
This simple converter uses default stream selection. It does not promise to retain subtitles, chapters or every audio track.
Do my files leave my device?
Files are processed inside this browser. The site downloads its processing software, but your selected files are not sent to a conversion server.
Which files can I use?
Common MP4, MOV, MKV and WebM videos are accepted. The codec inside a file must also be supported. DRM-protected media cannot be converted.
How large can a file be?
Select up to 100 images per batch, or one audio or video file per job. There is no fixed file-size or processing-time quota. Available memory, browser support and your device determine what can be processed. Large batches offer individual downloads to avoid an additional ZIP copy.