PDF Tools

Add Watermark

Overlays one line of text, such as CONFIDENTIAL or DRAFT, across every page of a PDF. You set the wording, font size (20 to 100 pt), opacity (5% to 100%) and rotation (-90 to 90 degrees); the colour is fixed at mid grey.

Try in Workspace
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Add Files
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Process
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Download
Processed in your browser — your file is not uploaded.

Drop your files here

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Up to 1 files

How to Use

  1. 1Drop one PDF onto the upload area.
  2. 2Edit the Watermark Text field (it starts as CONFIDENTIAL).
  3. 3Set Font Size (20 to 100 pt), Opacity (5% to 100%) and Rotation (-90 to 90 degrees) with the sliders.
  4. 4Click Add Watermark.
  5. 5Download watermarked.pdf.

Features

  • Text watermark only; image or logo watermarks are not supported here
  • Font size 20 to 100 pt in bold Helvetica
  • Opacity slider from 5% to 100% (default 30%)
  • Rotation from -90 to 90 degrees (default -45)
  • Watermark colour is fixed grey; there is no colour picker
  • One PDF at a time, applied to every page, in your browser

FAQ

Can I change the watermark colour or use an image or logo?

No. This tool draws text in a fixed mid-grey and has no colour control or image upload. For putting a logo on pictures, the image tools on this site handle image files, but PDF pages only get text here.

Will the watermark be centred exactly?

It is positioned from the horizontal centre and the vertical middle of each page, then rotated around its starting point. At steep angles or with long text it can end up off-centre or partly outside the page, so try a shorter word or a smaller size.

Can the watermark be removed again?

It is drawn as text on top of the page content, so it is part of the saved file. Keep your original PDF; there is no undo once you have downloaded the result. There is a separate Remove Watermark tool, but its results depend on how the watermark was added.

Are my files uploaded anywhere?

No. The watermark is applied in your browser and the file is not sent to a server for this job.

Related Tools

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Deletes all annotations from a PDF. It cannot remove watermarks drawn into the page content.

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