Add a Moving Watermark to Video Online
Add text or logo watermarks to your videos and make them move across the frame. Everything is processed locally in your browser — your video never leaves your device. Free, no account needed.
Drop a video here or click to browse
MP4 / WebM / MOV · never uploaded, stays in your browser
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Free moving-watermark tool that runs entirely in your browser
WatermarkFlow is a free browser-based video watermark tool for adding text or logo watermarks to your videos. Unlike a traditional static watermark, you can make your watermark move across the video using linear, circular, parabolic, or randomized movement — so it cannot be defeated with a simple crop. There is no account, no upload queue and no paid export: your video is decoded, watermarked and encoded locally on your device.
How to add a moving watermark
- Upload your video — drop an MP4, WebM or MOV file onto the upload area above.
- Add text or upload a logo — tune the font, color, size and opacity, or place your own PNG or JPG mark.
- Choose the watermark position, opacity and movement — bounce, orbit, parabolic trace or random jumps.
- Preview the movement live on the canvas before committing.
- Export the watermarked video as a full-resolution WebM with audio preserved.
Why use a moving watermark?
- Brand social media videos so reposts always carry your identity.
- Protect preview footage and client drafts shared before payment.
- Discourage unauthorized reposting and make stolen clips traceable.
- Make the watermark harder to crop out than any corner logo.
- Add a visible creator identity to every clip you publish.
Does WatermarkFlow upload my video?
No. Video processing happens directly in your browser using local decoding, canvas compositing and encoding — your video stays on your device from upload to download. That is also why exports ask you to keep the tab focused: your machine, not a server, is doing the work.
Moving watermark FAQ
What is a moving watermark?
A moving watermark is a text or logo mark that changes position over time instead of sitting in one corner. Because it travels across the frame, it survives crops and zooms that defeat static watermarks.
How do I add a moving watermark to a video?
Upload your video above, type your text or upload a logo, pick a movement path such as linear bounce or random jumps, preview it live, then export. The whole process takes a few minutes and runs entirely in your browser.
Can I use a logo instead of text?
Yes. Switch to the Image logo tab and upload a PNG or JPG. PNG transparency is preserved so the logo blends into the video; JPG renders as a solid rectangle.
Can I make the watermark move randomly?
Yes — choose the Random trajectory and set how often it jumps to a new spot. The positions are deterministic, so the preview and the export match exactly.
Does the video get uploaded to a server?
Never. WatermarkFlow has no video backend: everything is decoded, composited and encoded locally on your device.
Is the video watermark tool free?
Yes — free with no account and no paid tier. The file you download carries only your watermark, never ours.
What video formats are supported?
MP4, WebM and MOV inputs (H.264, VP8 and VP9 decode best), with export to full-resolution WebM including your original audio. Both horizontal and vertical videos are supported.
Can a moving watermark make videos harder to crop?
Significantly harder. A static corner mark disappears with one crop; a mark that bounces, orbits or jumps across the frame stays visible through crops, zooms and re-encodes.