ToolNest

💧 PDF Watermark

Add a watermark to PDF online free — stamp custom text like DRAFT or CONFIDENTIAL across every page with control over size, color, angle and opacity. Your PDF is processed locally, never uploaded.

🔒 100% Private — no uploads ⚡ Instant — works offline 💸 Free forever — no sign-up

Drop a PDF here or click to browse

🔒 Files are processed on your device — never uploaded

How to use the PDF Watermark

  1. 1 Upload the PDF you want to watermark.
  2. 2 Type your watermark text (e.g. CONFIDENTIAL, DRAFT, your brand name).
  3. 3 Adjust size, color, angle, opacity and placement.
  4. 4 Click Add Watermark and download the stamped PDF.

Frequently asked questions

How do I add a CONFIDENTIAL watermark to a PDF?

Type CONFIDENTIAL in the text field, keep the diagonal angle and light opacity, choose "Center of every page", and click Add Watermark.

Can I watermark every page at once?

Yes — the watermark is applied to all pages automatically. Choose center placement or a tiled pattern that repeats across each page.

Does the watermark support Hindi or other scripts?

Currently only Latin characters (English letters, numbers, punctuation) are supported by the built-in PDF fonts.

Can the watermark be removed later?

The watermark becomes part of the page content — it cannot be simply toggled off, though determined editing tools could remove it. It is a visual deterrent, not encryption.

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