Watermark — Watermarking Reference

Quick-reference skill for watermarking techniques, implementation, and digital content protection.

When to Use

• Adding visible watermarks to images and documents
• Understanding invisible/digital watermarking for tracking
• Implementing CSS/canvas watermarks in web applications
• Protecting intellectual property and detecting unauthorized use
• Understanding steganography and content authenticity

Commands

intro

scripts/script.sh intro

Watermarking overview — types, purposes, visible vs invisible, history.

visible

scripts/script.sh visible

Visible watermarks — design principles, placement, opacity, tamper resistance.

invisible

scripts/script.sh invisible

Invisible watermarks — frequency domain, LSB, spread spectrum, robustness.

web

scripts/script.sh web

Web watermarking — CSS overlay, canvas-based, DOM watermarks, anti-removal.

document

scripts/script.sh document

Document watermarking — PDF, print, forensic tracking, canary traps.

ai

scripts/script.sh ai

AI watermarking — C2PA standard, AI-generated content marking, detection.

attacks

scripts/script.sh attacks

Watermark attacks — removal, distortion, collusion, and countermeasures.

checklist

scripts/script.sh checklist

Watermark implementation checklist for different use cases.

help

scripts/script.sh help

version

scripts/script.sh version

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