pdf toolsEssential

Add Custom Watermark to PDF

Protect intellectual property and designate document confidentiality. Stamp customizable text watermarks like 'CONFIDENTIAL', 'SAMPLE', or 'DO NOT COPY' across all pages.

Watermarks stamped locally via HTML5 canvas and pdf-lib. Zero uploads.
Current Document: Sample_Contract_Agreement.pdf (4.80 MB)

PDF Power Mode

Angle45°
Opacity25%
100% Private local browser memory
CONFIDENTIAL
CONFIDENTIAL AGREEMENTDOC ID: TH-8942-PDF

INDEPENDENT SERVICE CONTRACTOR AGREEMENT

This Independent Contractor Agreement (the "Agreement") is made and entered into as of this current calendar date, by and between the Client and the Service Provider. Both parties agree to the following terms of service, intellectual property assignment, and delivery schedules.

1. Scope of Work & Deliverables

The Contractor shall provide professional software engineering and digital production services as mutually specified in attached statements of work.

Client Signature:
Awaiting Signature...
Date:
Sept 18, 2026
Advertisement
Sponsored PlacementGoogle AdSense Integration Ready

How to Use PDF Watermark Adder

1

Upload PDF

Choose your PDF document from your device.

2

Customize Watermark

Type your watermark text, choose color, adjust opacity and angle.

3

Download Watermarked PDF

Save your stamped document with professional watermark overlays.

About PDF Watermark Adder

PDF watermarking appends a rotated text element with an Extended Graphics State (ExtGState) transparency matrix into each page's content stream.

Supported Formats

PDF

Operational Limits

  • Text watermarking supported

Key Features

  • Custom text, font size, and rotation angle (0° to 45° diagonal)
  • Tunable transparency and opacity slider so text underneath remains readable
  • Presets: CONFIDENTIAL, DRAFT, DO NOT COPY, SAMPLE, PREVIEW
  • Applies uniformly across all pages or selected pages
  • Instant client-side generation

Frequently Asked Questions

You can adjust the opacity slider (e.g. 20%) so the watermark is clearly visible while text below remains legible.

Related Tools

More in pdf tools