Watermark PDF

Stamp text watermarks on PDF pages.

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About Watermark PDF

Watermark PDF stamps a line of text diagonally across every page, whether that is CONFIDENTIAL, DRAFT, a firm's name or anything else you type. You control the size, opacity, angle and colour, and a light setting keeps the page readable underneath. The stamp is drawn into the PDF inside your browser, so the document is never uploaded.

How to use Watermark PDF

  1. Load the PDF you want to mark.
  2. Type your watermark text, such as DRAFT COPY or your firm's name.
  3. Adjust size, opacity, rotation and colour; about 20% opacity at 45 degrees stays legible.
  4. Click Add watermark and download the stamped PDF.

What people use it for

  • Marking a quotation or a drawing as DRAFT before sending it for internal review.
  • Stamping a photocopy of an ID with the purpose it was submitted for.
  • Putting a firm's name across sample reports shared with prospective clients.
  • Labelling duplicate sets of documents as COPY before an office filing.

Good to know

The watermark is a text stamp placed in the centre of every page, not an image and not a repeating background pattern, and it is applied to all pages at once. Standard PDF fonts are used, so only Latin characters appear; Hindi or other Indic text is dropped. Anyone with an editor can remove a text stamp, so treat it as a label rather than security.

Frequently asked questions

Can I watermark with a logo image?
No, this tool stamps text only. For a logo, export the pages with PDF to JPG, add the image using the Image Watermark tool, then rebuild the document with JPG to PDF.
Can I use Hindi or another Indian language?
No. The built-in PDF fonts cover Latin characters only, and anything else is removed before stamping. Write the watermark in English or transliterate it.
Does a watermark protect my document?
Not really. It discourages casual misuse and shows ownership, but the text sits as an ordinary PDF element that editing software can delete. Use it as a label, not as security.
Can I watermark only some pages?
Not in one pass; every page gets the stamp. As a workaround, extract the pages you want marked, watermark them, and merge them back with the rest.