Convert MP4 to WebM for free
WebM is built for web pages: it plays in browsers and can be smaller. Convert an MP4 here without uploading it.
How to convert MP4 to WebM
- Choose your MP4 file above, or drop it on the box.
- Check that WebM is selected as the new format.
- Press Convert, then download your WebM file. Nothing is uploaded.
When WebM makes sense
WebM is designed for web pages, so it is a good fit if you are putting a video on a website. It often makes smaller files than MP4.
Good to know
- Converting to WebM changes the picture itself, so it takes a little longer than a simple file-type change.
- Many editors, phones and TVs can’t play WebM. If you are sharing a video with people, MP4 is the safer choice.
- Only the main video and sound are kept. Extra audio tracks and subtitles aren’t included.
Common questions
Is the quality the same after converting?
Often yes. When the video already suits the new format, the picture and sound are copied as they are and nothing is lost. When the picture has to be made again, a little quality can be lost, and the result page tells you which applied.
Is my video uploaded?
No. The conversion happens on your own device, there is no account to create, and no watermark is added to the result.
Need a smaller file? Compress a video Free, no account, nothing uploaded.