Add Watermark to PDF

Stamp your documents with customized text. 100% secure, offline-level privacy.

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Drag & Drop your PDF here

or click to browse from your device

🔒 Processed securely in your browser

The Ultimate Free PDF Watermark Creator

Protecting your intellectual property and sensitive documents is crucial. Whether you need to stamp a legal contract with "CONFIDENTIAL", mark a draft with "DO NOT COPY", or brand an ebook with your company name, our Premium PDF Watermark Tool handles it instantly.

Unlike other online tools that force you to upload your sensitive files to their servers, our tool is built with 100% Client-Side technology. By utilizing powerful JavaScript libraries directly inside your browser, the watermarking process happens entirely on your own device. This guarantees absolute data privacy and lightning-fast processing, regardless of your internet connection speed.

How to Add a Watermark to Your PDF

  1. Upload File: Drag and drop your PDF document into the designated box or click to select a file from your device.
  2. Enter Text: Type the watermark text you want to appear on your pages (e.g., "DRAFT" or "CONFIDENTIAL").
  3. Customize Style: Adjust the font size, select a specific color, and set the opacity so it doesn't block your document's text.
  4. Choose Angle: Select whether you want the text to run diagonally, horizontally, or vertically.
  5. Process & Download: Click "Add Watermark". In seconds, your protected PDF will be ready for local download.

Frequently Asked Questions

How do I add a watermark to my PDF?

Simply upload your PDF, type your desired watermark text, adjust the font size, opacity, color, and angle, then click "Add Watermark". Your file will be ready to download instantly.

Is my PDF uploaded to a server?

No. Our PDF Watermark tool uses Client-Side JavaScript. Your document is processed entirely inside your own browser and is never uploaded to any server, ensuring 100% privacy.

Can I change the transparency of the watermark?

Yes! You can easily adjust the opacity slider in the settings panel. Setting it to 30% makes it slightly transparent like a background stamp, while 100% makes it completely solid.

Does this tool cost anything?

Not at all. ToolVigo provides this premium PDF watermarking utility completely free of charge, with no daily limits or watermarks from our end.