+91-1234567890 +91-1234567890 info@amudigitalworld.com
Mon-Sat: 9:00 AM - 7:00 PM

Add Watermark to PDF

Add custom text watermarks to your PDF pages online. Customize position, opacity, color and rotation.



Add Watermark to PDF

Add a custom text watermark to every page of your PDF. Customize position, opacity, color, font size, and rotation. 100% browser-based.

Click or Drag & Drop PDF File

Max 50MB

Add Watermark to PDF Online Free – Text Watermark with Custom Style

Free PDF watermark tool | Add text watermark to PDF | Stamp PDF online | CONFIDENTIAL watermark PDF

Protect your PDF documents and assert ownership by adding a professional text watermark with our free online PDF watermark tool. Whether you need to stamp documents as "CONFIDENTIAL", "DRAFT", "SAMPLE", or add your company name or copyright notice — this tool applies the watermark to every page of your PDF instantly, with full customization control.

All watermarking is done 100% in your browser using the pdf-lib JavaScript library. Your PDF file is never uploaded to any server, making this tool ideal for confidential contracts, legal documents, financial reports, and corporate presentations.

How to Add a Watermark to PDF – Step by Step

  1. Upload Your PDF — Drag and drop or click to upload your PDF file. Files up to 50MB are supported.
  2. Enter Watermark Text — Type your watermark text (e.g. CONFIDENTIAL, DRAFT, your company name). Up to 50 characters are supported.
  3. Customize Settings — Adjust font size (20–100pt), opacity (5–100%), rotation angle (-90° to +90°), color (gray/red/blue/green/black), and position (center/top/bottom).
  4. Download Watermarked PDF — Click "Add Watermark & Download". The watermarked PDF is generated and saved to your device in seconds.

Watermark Customization Options

Setting Options Available Recommended Value Effect
Opacity 5% – 100% 25–40% Lower = more transparent, subtle
Font Size 20pt – 100pt 48–60pt Larger = more visible across page
Rotation -90° to +90° -45° Diagonal watermark looks professional
Position Center / Top / Bottom Center Center diagonal is most common
Color Gray / Red / Blue / Green / Black Gray Gray is subtle yet visible

Key Features

Full Text Customization
Control font size, opacity, rotation angle, text color, and position. Create exactly the watermark style you need.
Applied to All Pages
The watermark is automatically applied to every single page of your PDF document in one step.
Private & Secure
Your PDF never leaves your browser. Zero server upload means complete confidentiality for sensitive documents.
Completely Free
No account, no subscription, no watermark on the watermark tool itself! Use it unlimited times for free.

Frequently Asked Questions

Common choices include: CONFIDENTIAL, DRAFT, SAMPLE, DO NOT COPY, company name, or copyright notice. Up to 50 characters are supported. Choose text that is meaningful for your specific use case.

For a subtle background watermark, use 20–40% opacity. For a bold, clearly visible stamp (like DRAFT), use 60–80%. For print purposes, 30% gray is most commonly used.

The original file on your device is unchanged. However, the watermark baked into the downloaded PDF is embedded in the page content and cannot be easily removed without specialized tools. Always keep a backup of the original.

Currently this tool supports text watermarks only. Image/logo watermark support is a feature planned for future updates. For text watermarks, all customization options are available now.

Yes. The watermark is embedded as actual PDF content and will appear on printed pages. The opacity setting controls how clearly it shows up in print — higher opacity means more visible on print.
Related Tools: Protect PDF | Edit Metadata | Unlock PDF | Merge PDF
Need Help?

Visit our center for all digital and government services.

Book Appointment
Related Tools
JPG to PDF PDF Merge PDF Split PDF Compress PDF to JPG PDF to Word

Stay Updated with Latest News

Get the latest government service updates and tips directly in your inbox.

No spam, unsubscribe anytime.