Watermark PDF

Add a text watermark across pages.

Edit Local-first processing
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Drop files here Choose PDF files or images depending on the selected tool. PDF files are processed locally in this browser tab.

Tool settings

Add a text watermark across pages.

Page 1 preview

Marking a document as a draft or a copy takes one line of text laid over the page. Type the wording in Latin letters, decide how big, how faint and how steep it sits, then tick the pages that should carry it. The stamp is drawn in this browser tab, so the PDF itself is never uploaded.

Nothing gets uploaded

The text is drawn onto the pages on your own machine, inside this tab. A contract or payslip you are marking as a draft is never sent to our servers.

Your own wording

Type what the page should say: DRAFT, CONFIDENTIAL, a client name, a date. It is a single bold line in Latin letters and digits, so keep it short enough to sit inside the page.

Size, angle and opacity

Set the type size, the tilt and how strongly the stamp shows. It starts at 42 point, tipped back 28 degrees and deliberately faint at 0.18 opacity.

How to watermark a PDF

  1. Open your PDF

    Drop the file onto the tool or browse for it. The pages come up as thumbnails, and that is where you pick the ones to stamp.

  2. Set the text and look

    Replace the default wording, then adjust size, opacity and rotation. Tick the pages that should be stamped; every page you leave unticked stays as it was.

  3. Save the stamped file

    Download the result. Any change to the text or the number fields stamps again and refreshes the preview of the finished file, so try a fainter or steeper setting first.

Watermark PDF FAQs

Can I add a logo or image watermark?

Not here. This tool draws text only, one line per page, and there is no image or logo upload, so a graphic stamp cannot be placed on the page from this screen.

Can I change the watermark colour?

No, the colour is fixed to the app's green. What you can change is how strongly it shows: opacity runs from 0 to 1 and sits at 0.18 by default, which keeps the text underneath readable.

Can I move the watermark or put it behind the text?

No. One line is drawn near the middle of each page, over the content: there is no corner placement, no tiled repeat and no behind-content option. Rotation and size are what decide how it falls across the page.

Can I watermark only some pages?

Yes. Pages are individually selectable, so you can stamp a cover sheet, one appendix, or the whole document. Untick anything that should stay clean and only the selected pages get the text.

Can I remove a watermark from a PDF?

This tool adds one, it does not take one away. Once you save, the text is part of the page drawing rather than a separate layer, so keep your original if you will need a clean copy later.

Why does my watermark text fail with an error?

The built-in font covers the standard Latin set. Chinese, Japanese, Cyrillic or Devanagari characters stop the run with a processing error, so write the stamp in Latin letters, digits and basic punctuation.

Is it safe to watermark a confidential PDF here?

The PDF is read and rewritten inside your browser and is never sent to our servers; the app has no upload path at all. The only mark added is the line you typed, and no account is needed to run it.

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