Convert Video
Convert between MP4, WebM, MOV, and GIF — free, with no watermark and no upload required.
All processing happens in your browser — your video never leaves your device. The first run downloads the ~25 MB ffmpeg engine (cached after that).
Drop a video here or click to browse
MP4, MOV, WebM, MKV · converted on your device, never uploaded
Files are processed locally and never leave your device ✦
How to convert a video
- Drop your video into the box above (or click to browse).
- Choose the target format from the dropdown.
- Click Convert and wait for the engine to finish.
- Preview the result and download your converted file.
Frequently asked questions
- Is my video uploaded to a server?
- No. Everything runs inside your browser using WebAssembly. Your video never leaves your device.
- Why does the first conversion take longer?
- On first use the browser downloads the ~25 MB ffmpeg engine. It is cached afterwards, so future conversions start right away.
- How large can the GIF output be?
- GIFs are uncompressed animations and can be surprisingly large. For best results, convert short clips (under 15 s) and keep the width at 480 px or smaller.
- Which format should I choose?
- MP4 for maximum compatibility. WebM for smaller web-optimised files. MOV for Apple workflows. GIF for short looping animations.