Claude Watermark Checker is a free tool to detect and remove AI text artifacts from Claude outputs. It identifies hidden HTML classes, invisible Unicode characters, stylistic markers, and Anthropic's watermark, then cleans them in one click for human-readable, AI-free text.
Key benefits include:
- Free & Private Checking: Unlimited, account-free text analysis runs in your browser with no uploads or data storage.
- Precise Artifact Detection: Identifies specific AI telltales like HTML class names, zero-width characters, em dashes, and AI-style prose rhythm.
- One-Click Cleaning: Removes all detected artifacts instantly, with a rewrite pass to alter AI-specific word choice and sentence structure.
- Transparent Findings: Provides deterministic, position-specific counts of artifacts (not probabilities), ensuring clear, verifiable results.
- Open-Source Verification: The detection engine is open-source, letting users audit the tool’s accuracy independently.
Perfect for writers, content creators, and students using Claude who need to ensure text isn’t flagged as AI, or clean pasted content for platforms like AO3, Google Docs, and more.
