aklappsFast, free online tools

Video Watermarker

Add a text watermark to your video, preview it, and export — right in your browser.

Works best with common browser-supported formats. Nothing is uploaded.
The text moves every 60 seconds to reduce fixed burn-in.
px
Watermark strength 0.50
More options
px
Spacing between the watermark and the video edges.
Source preview
No video loaded.
Watermark preview / export frame
Canvas not initialized.
Processed on your device. Your video is never uploaded.
Waiting. Load a video to begin.

How this browser video watermark tool works

Upload a video, type the watermark text, adjust the size, color and opacity, then preview the result. When you export, the watermark is drawn over each frame on a canvas while keeping the original video dimensions. Everything happens locally in your browser using canvas and MediaRecorder.

Why use a moving watermark

  • A moving watermark is harder to crop out than a fixed corner watermark.
  • It stays subtle while still identifying the source video.
  • Changing position every minute helps reduce repetitive screen placement.

Best settings for subtle watermarking

  • Opacity around 0.30–0.55 works well for most business videos.
  • Use a font size that is neutral relative to the resolution.
  • For bright videos use black text; for dark videos use white text.

Privacy

This page runs entirely in your browser. Your video is not uploaded to any server, and the export is created on your device. The output is usually a WebM file, with audio preserved when the browser supports stream capture.

Frequently asked questions

How do I add a text watermark to a video?

Choose your video, type the watermark text, adjust the size, colour and opacity, then process and download the watermarked video.

Does it upload my video?

No. The video is processed on your own device in the browser, so it is never uploaded or stored.

Which video formats work?

Common formats your browser can play, such as MP4 or WebM. The export format depends on your browser's recorder.

Why does processing take a while?

The video is re-recorded frame by frame in your browser, so longer or higher-resolution videos take more time.

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