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Add PDF Watermark

Stamp a text watermark on every page of a PDF.

Your data stays on your deviceNo upload, no serverWorks offline

Why use this tool

01

Select one PDF, enter a text watermark with color, position, opacity, and font size controls, then download the marked file locally.

This PDF workflow is designed for common document cleanup and handoff tasks where uploading files would add privacy risk or delay.

Processing runs in the current browser tab, so the practical limit is your device memory and browser support rather than a server quota.

How to use

02
01Add the single PDF file you want to watermark.
02Enter the watermark text, then choose color, position, opacity, and font size.
03Run Add Watermark, then open the downloaded PDF locally to verify placement and readability.

Quick checks before you copy

03

Confirm the input is the format you intended.

Scan the result before using it in a document, URL, config, or message.

Copy only the output you need.

Use Cases

Mark Drafts as Confidential

Add a CONFIDENTIAL or DRAFT watermark to documents before sharing for review to prevent premature use.

Brand Client Deliverables

Add a company name, client label, or review status text watermark to reports and proposals before sending them onward.

Protect Sample Documents

Watermark portfolio samples or preview documents to discourage unauthorized use.

Label Archival Copies

Stamp ARCHIVE or SUPERSEDED on older document versions to prevent confusion with current versions.

Tips & Tricks

  1. 01
    Diagonal text watermarks are harder to remove

    Diagonal watermarks (45°) overlap more content and are more resistant to simple cropping or removal attempts.

  2. 02
    Use low opacity for readability

    A 20–35% opacity watermark is visible without obscuring the document content underneath.

FAQ

04
Can the watermark be removed by recipients?

Text watermarks added by this tool are embedded in the PDF content stream, making them difficult but not impossible to remove with specialized tools.

Are my files processed locally?

Yes. All watermarking happens in your browser. Files are never uploaded.

Can I watermark every page?

Yes. The watermark is applied to all pages by default.

What font does the watermark use?

Helvetica (the standard built-in PDF font). No font picker is available in this tool — for custom typography in a watermark, render the watermark text as an image first and stamp it via desktop PDF software.

Related tools

03

Merge PDFs

Combine multiple PDF files into one, directly in your browser.

Compress PDF

Re-save a PDF with compact object streams to reduce structural overhead when possible.

Remove PDF Restrictions

Strip owner-set permission flags (no-print, no-copy, no-edit) from a PDF you can already open. Cannot decrypt user-password-protected files.

Add PDF Watermark — Stamp a text watermark on eve… | TOOLGRID