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.