Don's Tools · Video · Add Watermark

Add a watermark to video

Stamp your logo or text onto a video, right in your browser. Nothing is uploaded.

🎬
Drop a video here
or tap to choose · one video · stays on your device
Add watermark
Drag a watermark on the video to move it. Click one to edit or delete it.
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Files are processed in your browser and never uploaded.

How to use Add a watermark to video

  1. Add your file

    Drop your video file onto the upload area, or tap the area to choose it from your device.

  2. Run it

    Press Add watermarks, Don →. The button stays disabled until there is something to work on, and each file shows its own progress and result.

  3. Save the result

    Press Download video. Each finished file keeps a name based on the one you started with, so you can tell the versions apart.

What this tool does

Multiple text and image watermarks

Add as many text and image watermarks as you need, so a logo in one corner and a handle in another take one pass.

Drag each one anywhere, with live preview

Drag each watermark where you want it on the live preview, so you can see it against the actual footage before exporting.

Adjustable size and opacity, delete any

Size and opacity are adjustable per watermark, and any of them can be deleted without starting again.

Exports MP4

The result is an MP4 with the watermarks baked into the picture, so they survive sharing, reposting and re-uploading.

Runs in your browser, nothing uploaded

Every frame is drawn and encoded in your browser, so the video is never uploaded.

Frequently asked questions

Is my video uploaded to a server?

No. The video is decoded, drawn to a canvas with your watermark and re-encoded in your browser. Nothing leaves your device, which is also why a long video takes as long as your computer needs.

What format do I get back?

An MP4. The watermark is baked into the picture, so it survives sharing, re-uploading and reposting.

Can I use my logo instead of text?

Yes. Add an image watermark from a PNG or JPG, or add text, or both. Each one can be dragged anywhere on the frame with a live preview, and has its own size and opacity.

How long can the video be?

There is no hard limit, but everything is encoded on your device, so length is limited by memory and patience. A minute or two is comfortable on a phone, and longer clips are better done on a desktop.

Does it re-encode and lose quality?

Yes, the video is re-encoded because the watermark has to be drawn into every frame. The output is high bitrate, so the loss is small, but it is not lossless.

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