Video Watermark

Add a text or logo watermark to a video in your browser — pick a corner and opacity, download the result. Nothing uploaded.

Drop a video to watermark it

MP4, WebM, MOV…

Add a video to begin. The first run downloads the engine (~25 MB) once.

How to use

  1. Drop a video in, or tap the box to choose one.
  2. Choose a text or logo watermark, then pick a corner and opacity.
  3. Press Add watermark & download — bigger clips take a while, so a desktop helps.

FAQ

Is my video uploaded anywhere?

No. The watermark is composited entirely in your browser using ffmpeg compiled to WebAssembly. Your video and logo never leave your device. The engine (about 25 MB) downloads once on first use and is then cached.

Can I use my own logo?

Yes. Switch the watermark type to Logo image and choose a PNG, JPG or WebP. A PNG with a transparent background looks best, since the logo is overlaid directly onto the video.

Why is it slower than a normal app?

Encoding video in the browser is heavier than native software because it re-encodes the picture. Short clips are quick; longer or high-resolution videos can take several minutes and a lot of memory, so a desktop is recommended.