WebM with VP9 is an open, royalty-free video format designed for the web. It compresses better than H.264 and plays in Chrome, Edge, Firefox and recent versions of Safari. Convert any video to WebM here without installing software.
How to convert videos to WebM (VP9)
- Drop your videos in the box above, or click to pick them. You can add as many as you like.
- WebM (VP9) is already selected as the output format. Switch on other formats if you want them too.
- Optional: open Advanced Settings to resize by percentage, width or height, and add more sizes.
- Click Start Conversion, then download each file or all of them at once. Nothing is uploaded: the conversion runs in your browser.
Why convert videos to WebM (VP9)?
WebM is ideal for background videos and embedded clips: smaller files than H.264 at similar quality and no licensing concerns. Pair it with an MP4 fallback for full coverage.
Frequently asked questions
Do all browsers play WebM?
Chrome, Edge and Firefox have played WebM for years, and Safari plays VP9 WebM in recent versions. Offering an MP4 fallback covers older Apple devices.
Are my videos uploaded?
No. The video is decoded and encoded in your browser, on your device. Nothing is sent to a server, which also means there is no file size limit other than your device memory.
Can I resize the video while converting it?
Yes. Open Advanced Settings and turn on Resize to scale the video by percentage, width or height. You can add more sizes to get several versions in one go.