Convert videos between MP4, WebM, MOV and MKV in a few clicks. Everything runs on your device using your browser's built-in video codecs, so your clips are never uploaded and no server limits how big they can be.
Drag & drop, click to browse, or paste
MP4, MOV, WebM, MKV
Runs fully in your browser. Your files are never uploaded.
Drop, paste or choose a MOV, MP4, WebM or MKV file. It stays on your device.
Pick MP4 for maximum compatibility or WebM for the web, and set the quality.
Conversion runs in your browser with hardware acceleration. Preview the result and save the file.
Your files are processed on your device and never uploaded to any server.
No account, no limits and no watermark on your results.
Runs at native speed in your browser and keeps working once the page has loaded.
You choose the settings - nothing is silently downscaled or recompressed.
You can open MP4, MOV, M4V, WebM and MKV files and save them as MP4 (H.264 video with AAC audio) or WebM (VP9 video with Opus audio). Support for individual codecs depends on your browser.
No. The conversion uses WebCodecs, a video engine built into your browser, so the file never leaves your computer or phone.
When the video inside already uses a codec the new format supports, such as H.264 in a MOV, the streams are copied without re-encoding. That is lossless and takes seconds.
There is no server limit. The converted file is built in memory, so very large files (over 2 GB) can fail on devices with little RAM.
