1
Step 1
Select a PDF file to watermark.
Add Watermark to PDF Online
Use NewTools to add a text watermark to a PDF directly in your browser. Applies a repeated text watermark with opacity, size, and rotation controls.
Offline PDF Text Watermarking. Add custom text stamps like DRAFT or CONFIDENTIAL to your PDFs securely and locally.
No installation
Fast processing
Browser friendly
Privacy-aware
Features
Text Watermarking: Applies a custom text string to the center of every page in the PDF document.
Display Controls: Customize the watermark's opacity, font size, and rotation angle.
Local Processing: Uses pdf-lib to stamp the document entirely within your browser for full privacy.
Instant Export: Downloads the newly watermarked PDF directly to your device.
How It Works
2
Step 2
Enter your watermark text and adjust the opacity, size, and rotation settings.
3
Step 3
Click Apply Watermark and download your stamped PDF.
Common Use Cases
Draft Labeling
Stamp 'DRAFT' or 'CONFIDENTIAL' across documents before sharing them internally.
Copyright Stamping
Add your name or company as a faint text layer over PDF pages to deter unauthorized use.
Document Classification
Mark PDFs with security classifications using large, rotated, semi-transparent text.
Tips & Best Practices
Tip 1
Use a lower opacity (e.g., 0.18) so the watermark doesn't obstruct the underlying document text.
Tip 2
A rotation of -45 degrees usually looks best for large center-page stamps.
Add Watermark to PDF
Completely Private
Because the stamping process utilizes your browser's resources, your confidential documents remain strictly on your device.
Frequently Asked Questions
Can I use an image or logo as a watermark?
No. This specific tool only supports rendering custom text strings as watermarks.
Does this tool prevent someone from removing the watermark?
No. It applies a standard PDF text layer. It does not lock, rasterize, or password-protect the PDF to prevent editing.
Is my PDF secure?
Yes. The watermarking happens locally on your machine. Your file is never uploaded.