Add Watermark to PDF Online

Stamp your documents with a custom text watermark to protect your intellectual property. Processing is fully contained within your browser.

Select a PDF file

or drag and drop it here

filename.pdf

0 KB • 0 pages

Watermark Content

Text

Font Size

Opacity (%)

Color

Layout

Rotation (degrees)

45°

CONFIDENTIAL

Page Preview

Matches actual output

How to Use the Tool

Follow these simple steps to process your files securely in seconds.

Step 1

Upload your PDF file.

Step 2

Type your desired watermark text.

Step 3

Adjust rotation, opacity, and color in the preview.

Step 4

Click "Add Watermark" to download your stamped document.

Why Choose ToolLab

Protect and Brand Your PDF Documents Instantly

Need to stamp draft warnings or confidentiality labels onto your PDF pages? Our free Add Watermark to PDF tool allows you to place fully customized text overlays. With local browser processing, your confidential files are never uploaded to our servers, keeping your company data completely private.

Protect your intellectual property, establish document status (like DRAFT, CONFIDENTIAL, or APPROVED), and customize stamp transparency, color, and size effortlessly.

Key Features

Custom Text content: Type any message, brand name, or status indicator.
Styling & Transparency: Adjust colors, size, font weight, and opacity.
100% Private Stamping: Document stays on your computer.
Rotated Stamps: Position the text at any angle across the page.

Frequently Asked Questions

Is this watermark tool safe for sensitive files?

Yes, the stamping process runs entirely inside your browser. No files are uploaded to our servers.

Can I customize the watermark text and color?

Yes, you can write any custom text (like CONFIDENTIAL) and choose any font size, color, opacity, and rotation angle.

Will adding a watermark reduce document quality?

No, the watermark is layered on top as clean vector text. The original PDF contents remain perfectly sharp.

Can I apply the watermark to select pages?

Currently, the tool applies the watermark uniformly across all pages of your uploaded document.

Is there a limit on page count?

There are no page count limits. The tool can handle large documents directly on your device.