Is my video uploaded?

No, conversion runs entirely in your browser.

How large a file can I convert?

Short clips work best. Very large or long HD videos may exceed browser memory limits.

Convert almost any video to MP4, private, in your browser.

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Convert WebM, MOV, MKV, AVI and more into a universally-compatible MP4 (H.264). Choose your quality; nothing is uploaded.

Open the Video Converter tool and add your file. It's processed in your browser, never uploaded.
Adjust the available options to get the result you want.
Download the result. There's no sign-up, no watermark, and no size cap.

Is my video uploaded?: No, conversion runs entirely in your browser.
How large a file can I convert?: Short clips work best. Very large or long HD videos may exceed browser memory limits.

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Convert WebM videos to universally-compatible MP4.