Add a Logo Watermark to Video — Free, No Upload
Overlay your logo or image watermark on any video. Position, size and opacity controls. Runs in your browser — no upload, no watermark added by us.
💧 Logo · position · opacity🔒 No upload
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Drag & drop your video here, or click to browse
Max file size: ~2 GB (memory permitting)
Who uses the logo-watermark
- Content creators preparing footage for YouTube, Instagram, TikTok, or X who need a quick fix without installing software.
- Teachers, marketers, and students who want a no-learning-curve way to handle everyday video tasks.
- Developers and editors who need a predictable FFmpeg-backed result on any machine.
Supported formats & limits
| Input containers | MP4, MOV, WebM, MKV, AVI, FLV, WMV, M4V |
|---|---|
| Input codecs | H.264, H.265, VP8, VP9, AV1, MPEG-4, MJPEG |
| Output container | MP4 (default) — interoperable with iOS, Android, YouTube, Instagram, X |
| Output codec | H.264 video + AAC audio |
| Max file size | Up to ~2 GB (limited by browser memory) |
| Max duration | No hard limit — depends on file size |
| Cost | Free for any use. No signup. No watermark. |
Why choose this logo-watermark
- 100% private — your files never leave your browser, so nothing is uploaded to our servers.
- No watermark, no signup, no hidden limits. Completely free to use, for any purpose.
- Runs on top of FFmpeg compiled to WebAssembly, giving you the same results professionals get in the terminal.
- Works on desktop and mobile, on any OS — only a modern browser is required.
Frequently Asked Questions
What image format works best for a logo watermark?
A PNG with a transparent background looks best because only the logo shows, not a box around it. JPG works too but has no transparency.
Can I make the watermark semi-transparent?
Yes — the opacity slider goes from 10% to 100%, so you can add a subtle, barely-there mark or a bold opaque one.
Will it stay in the same corner the whole video?
Yes, the logo is placed at your chosen position for the full duration. For a moving or timed watermark, use a dedicated editor.
Does my video upload anywhere?
No. Everything runs in your browser with FFmpeg WebAssembly — the video and the logo never leave your device.