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PDF Watermark

Add custom text watermarks to PDF documents online. Free PDF watermark tool with position, rotation, opacity, and styling controls.

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Upload PDF File

Drag and drop or click to select a PDF file (max 100 MB)

About PDF Watermarking

PDF watermarking is the process of overlaying text or images onto PDF document pages. Watermarks serve multiple purposes: protecting intellectual property, indicating document status (draft, confidential, approved), branding materials with company names or logos, and deterring unauthorized copying or distribution.

This tool adds text-based watermarks entirely in your browser using the pdf-lib library. Your files are never uploaded to any server, ensuring complete privacy and security for sensitive documents.

Watermark Options Explained

Text Content

Enter any custom text for your watermark, such as "CONFIDENTIAL", "DRAFT", your company name, or a copyright notice. Up to 100 characters are supported.

Font Size & Color

Adjust the font size from 10px to 200px. Pick any color using the color picker or enter a hex code. Combine with opacity to make watermarks subtle or bold.

Opacity

Control transparency from 1% (nearly invisible) to 100% (fully opaque). For readable documents, 15-40% opacity is typically ideal, making the watermark visible without obscuring content.

Rotation

Rotate the watermark from -180° to 180°. A -45° diagonal is the most common choice, as it spans across the page making it harder to crop out.

Position

Choose from 8 placement options: center, diagonal, all four corners, header, or footer. Each places the watermark at the corresponding location on the page.

Repeat Pattern

Enable tiling to fill the entire page with a repeated watermark pattern. This provides stronger protection against cropping and is common for highly confidential materials.

Common Uses for PDF Watermarks

1

Confidential Documents

Mark internal reports, financial statements, and sensitive business documents with "CONFIDENTIAL" or "INTERNAL USE ONLY" to remind recipients of their restricted nature.

2

Draft Review

Add "DRAFT" watermarks to documents under review to prevent them from being mistaken for final versions. This is standard practice in legal, academic, and corporate environments.

3

Copyright Protection

Protect creative works, photography portfolios, and ebooks with your name or copyright notice. Watermarks deter unauthorized redistribution and establish ownership.

4

Corporate Branding

Add your company name or slogan to presentations, proposals, and marketing materials. Subtle watermarks reinforce brand identity throughout distributed documents.

Privacy & Security

100% Client-Side Processing: Your PDF files are processed entirely in your browser. No data is uploaded to any server, and no copies are stored or transmitted.

No File Size Tracking: We do not log file names, sizes, or any document content. Your watermarking activity is completely private.

How to Use PDF Watermark

1

Upload the PDF

Drop the file or browse for it. The tool loads the PDF and prepares the watermark layer.

2

Configure the watermark

Pick text or an image, then set content, font, colour, opacity, rotation, and position. A live preview shows how the result will look on a real page so you can adjust before committing.

3

Apply to all or specific pages

Stamp every page for uniform branding, or limit the watermark to selected pages such as internal-only sections. The tool applies whatever specification you give it.

4

Download the watermarked PDF

Generate the new file and verify the watermark looks right at the chosen opacity before distributing. The original stays untouched and a fresh stamped copy is downloaded.

When to Use PDF Watermark

Copyright and branding

A company logo or copyright notice stamped across every page makes ownership obvious and discourages casual reuse. The same approach works for branded reports, white papers, and any document that travels outside the company.

Draft and confidentiality markers

Stamping 'DRAFT', 'CONFIDENTIAL', or 'INTERNAL USE ONLY' across each page is the simplest way to keep work-in-progress from being mistaken for a final release. Reviewers can't help but notice the warning.

Invoice and receipt branding

Freelancers and small businesses often use a logo watermark on invoices to look polished without paying for custom design work. The watermark also acts as informal proof of origin if the file is ever forwarded.

Document tracking

Embedding a recipient's name, date, or version number in the watermark turns each copy into a uniquely identifiable file. If a document leaks, the watermark often reveals where it came from.

PDF Watermark Examples

Text watermark

Input
PDF stamped with 'CONFIDENTIAL' on a diagonal
Output
Every page carries the word CONFIDENTIAL across it at an angle, rendered semi-transparent so the underlying text remains legible.

This is the canonical pattern for legal review and internal distribution. The diagonal placement is hard to miss, and the transparency keeps the document readable.

Logo watermark

Input
PDF combined with a company logo image
Output
The logo appears on each page, with adjustable size, position, and opacity.

Logos placed in a corner stay subtle, while a centered logo dominates the page. Opacity in the 20 to 50 percent range usually balances visibility against readability.

Custom positioning

Input
Watermark anchored to a specific spot on the page
Output
Watermark sits at the chosen coordinates (top-left, centre-bottom, anywhere you specify), either uniformly or per page.

Custom placement avoids overlapping with body text or design elements, and lets you mark only certain pages such as internal cover sheets without affecting the rest of the document.

Tips & Best Practices for PDF Watermark

  • 1.Aim for opacity somewhere between 20 and 40 percent. Below that the mark vanishes; above it the underlying content becomes hard to read.
  • 2.A 45-degree diagonal looks deliberate and professional in a way that horizontal text often doesn't, which is why so many template watermarks use that angle.
  • 3.Image watermarks need a transparent background, which means PNG with an alpha channel. A JPG logo brings its background along and ends up looking like a sticker.
  • 4.Always preview at the same opacity you'll publish at. What's readable on a screen at 100 percent zoom may be obscured on a printed page or on mobile.
  • 5.For legal weight, spell out the copyright in the mark itself. Something like 'Copyright (C) 2024 Company Name. All rights reserved.' establishes the claim if the file is reproduced.
  • 6.Treat watermarks as a deterrent, not a security measure. Anyone determined to remove one can. Real protection requires encryption or DRM rather than a visible overlay.

Frequently Asked Questions

A watermark is a visible text or image layer overlaid on PDF pages. It sits on top of the original content semi-transparently without modifying anything underneath, and it's commonly used for copyright protection, branding, status indicators like DRAFT or CONFIDENTIAL, and document tracking.

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