The Converter
Convert up to five videos to MP4 or WebM. Private and free; nothing is uploaded.
1 · Choose your videos
Drag & drop videos here, or click to browse
Up to 5 videos, max 200 MB each · MP4, WebM, MOV, MKV, AVI…
2 · Pick a format
The video engine (~31 MB) downloads on first use and is then cached by your browser. All processing runs on your own device; nothing is uploaded.
3 · Collect your videos
Results appear here with a preview. Download them one by one or grab everything as a ZIP.
How to convert a video online
- Drop up to 5 videos into the box above, or click it to browse your files.
- Choose the output format: MP4 or WebM.
- Click Convert videos. The engine loads once, then each video is re-encoded on your device.
- Download each result or grab them all as a ZIP.
Frequently asked questions
Which formats can I convert?
You can load MP4, WebM, MOV, MKV, AVI, MPEG, 3GP, OGV and most other common video files, and convert them to MP4 (H.264 + AAC) or WebM (VP8 + Vorbis).
Will converting reduce quality?
Conversion re-encodes the video, so a small amount of quality is traded for compatibility. The settings are tuned so the difference is rarely visible.
Why choose MP4?
MP4 with H.264 video and AAC audio is the most widely supported video format in the world. If a device can play video, it can play MP4.
Is the converter really private?
Yes. The conversion runs entirely in your browser with ffmpeg compiled to WebAssembly. Your videos are never uploaded to any server.
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