FormatDogWorkspace
Convert a video between MP4, WebM, and MOV — runs on a real local video engine, entirely inside your browser. No watermark, no length limit.
No signup · No file limits · Files never leave your deviceSelect the video file you want to convert.
MP4 (H.264), WebM (VP9), or MOV.
Get your converted file, encoded locally.
MP4 (H.264) for the most universal playback compatibility across devices and platforms. WebM (VP9) for smaller files built for the web. MOV if you're moving footage into Apple editing software like Final Cut Pro or iMovie.
No. Conversion happens entirely inside your browser, on your own device.
A real, self-hosted build of FFmpeg compiled to WebAssembly — about a 30MB one-time download the first time you use any video/audio tool on this site, then cached by your browser for every tool afterward.
Video format conversion here re-encodes the file, which is a real, unavoidable step for changing between codecs like H.264 and VP9 — at the settings used, the difference is not visually noticeable for typical footage, but it isn't a bit-for-bit lossless copy.
Yes, completely free, with no daily limit.
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Pinch or use +/− to zoom, two fingers to pan. One finger to drag and redact.
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Drag the corner handles to resize the crop area, or drag the middle to move it.
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Detecting grid lines…
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Click any line of text to retype it. Pinch or use +/− to zoom.
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Highlight/Underline: drag a box over the text. Draw: drag to sketch. Note: tap once to place a comment.