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Video Converter

Convert a video between MP4 and WebM.

🎬Tap to choose a video fileor drop it here

    The first time you use a video or audio tool, a one-time ~30 MB processing engine downloads. WebM conversion is slower — it can take a while for longer videos.

    How it works

    1. 1Choose a video file.
    2. 2Pick MP4 or WebM as the target format.
    3. 3Convert and download the result.

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    About this tool

    Switch a video between MP4 and WebM depending on where you need to use it — MP4 for broad compatibility, WebM for smaller web-friendly files. Conversion runs entirely on your device; converting to WebM is slower than MP4 and can take a while for longer videos.

    Which formats are supported?

    MP4 and WebM, in either direction.

    Why is WebM conversion slower?

    WebM’s video codec (VP9) is more computationally intensive to encode than MP4’s H.264, especially running in the browser.

    Is my video uploaded anywhere?

    No, conversion happens entirely on your device. A one-time ~30 MB processing engine downloads the first time you use a video or audio tool.