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Free Watermark Tool

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This free tool stamps text or a logo onto your photos in your browser, one at a time or a whole folder at once, with the mark scaled to each picture rather than pasted at a fixed size.

Drop your photos here

or paste with Ctrl+V. Add as many as you like — they all get the same mark.

Runs entirely in your browser. Your images are never uploaded to a server.

How it works

  1. Drop your photos onto the box above, paste one with Ctrl+V, or choose them. Add as many as you like — they all get the same mark.
  2. Choose text or a logo. For a logo, a transparent PNG gives the cleanest result.
  3. Pick where it goes on the nine-position grid, or switch on tiling to repeat it across the whole picture.
  4. Set the size, opacity and angle. Everything is measured against each photo, so one setting looks the same on a 4000-pixel shot and a phone screenshot.
  5. Name the output and stamp the batch, then download the lot as a ZIP.

Common use cases

Frequently asked questions

Can I watermark more than one photo at a time?
Yes, and that is what this is for. Drop in a whole folder, set the mark once, and every photo gets it. They come back as a ZIP with names you choose, so a batch of sixty is the same amount of work as one.
Will the mark be the same size on every photo?
It will be the same size relative to each picture, which is what you actually want. The mark is measured against the shorter side of each image, so a landscape shot and a portrait one from the same shoot get a mark that looks the same rather than one that is huge on one and tiny on the other. Tools that position in absolute pixels get this wrong on any mixed batch.
Should I use text or a logo?
Text is quicker and always legible; a logo is stronger branding if you have one. For a logo use a transparent PNG, because a JPG will bring its white background with it. Either way, keep the opacity below about 70% so the mark reads as a mark rather than as part of the picture.
Where should a watermark go?
The bottom right is the convention and the default here, because it is out of the way of most subjects. The problem with any corner is that it can simply be cropped off, so if the point is to stop reuse rather than to sign your work, tile the mark across the whole image instead.
Can a watermark be removed?
A corner mark can be cropped out in seconds, and a faint one can often be painted out. A watermark deters casual reuse and makes the source obvious when an image is shared — it is not copy protection. Tiling and a moderate opacity make it much more work to remove, which is usually enough.
Are my photos uploaded to a server?
No. Every photo is drawn in your own browser using the Canvas API, and the ZIP is assembled there too. The files never leave your device and nothing is stored — which also means a folder of client proofs is not sitting on someone else's server.

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