UseTool

Add a watermark to a video

Place a logo or image over your video. Everything runs on your device.

Video

Watermark

Drawing into the picture means the video has to be encoded again. Expect this to take longer than the other video tools. A PNG with transparency works best.

🔒 Your files never leave your device.

How it works

How it works

  1. 1

    Add what goes in

    Add a video and an image together — the tool needs both before it can start.

  2. 2

    Start it

    Set the position, size and transparency, then start. Everything runs in this browser — no upload, no queue, no account.

  3. 3

    Take the result

    The MP4 · WebM is ready the moment the run finishes. Save it straight to your device.

What this tool does

Add a watermark to a video
Burns an image into every frame, at a position and transparency you choose. Burnt in means it cannot be peeled off again — unlike a PDF watermark, which sits on its own layer.

When you need this

  • A photographer wants to share a preview clip without it being reused unmarked.
  • Tutorial videos should carry the channel logo in a corner.

Good to know

Frequently asked questions

What files can I use here?

Needs a video and an image together.

What do I get back?

You get MP4 · WebM.

Does the file lose quality?

Every frame is decoded and encoded again. That is what makes the file smaller or different — and it costs some detail, most visibly in fast motion and fine texture.

When does it not work?

Which video codecs work depends on your browser. Chrome and Edge read the most, including H.265 on many machines; Safari and Firefox refuse some. A file that will not open here usually opens in Chrome.

Does the video lose quality?

Only when it has to be re-encoded. Cutting, joining and removing the sound track copy the picture data unchanged, so those are lossless. Compressing and adding a watermark do re-encode, which is why they take longer.

How long may a video be?

There is no fixed limit. What decides is the memory of your device: a phone manages a few minutes comfortably, a computer handles far more. If a long video fails, splitting it first and working on the parts usually helps.

Private by design

Your files stay on your device

Your files never leave your device.

Other tools

Ready-made

Workflows for this file type