AI Watermark Detector
Free tool to detect hidden watermarks and patterns left by AI text generators like ChatGPT, Claude, and other LLMs
How AI Watermark Detection Works
Pattern Analysis
Scans for zero-width characters, unusual spacing, and suspicious Unicode patterns commonly used in AI watermarks
Hidden Characters
Detects invisible watermark characters and formatting artifacts that are invisible to the naked eye
Probability Scoring
Provides a confidence score for watermark detection and highlights suspicious text patterns
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What Our Detector Finds
Zero-Width Characters
Invisible characters used to embed watermarks in AI-generated text
Unusual Spacing Patterns
Irregular spacing that may indicate watermark encoding
Unicode Artifacts
Suspicious Unicode characters and directional overrides
AI Writing Patterns
Common phrasing and structure patterns in AI-generated content
Frequently Asked Questions
What are AI watermarks?
AI watermarks are hidden patterns or characters embedded in AI-generated text to identify the source. They can include zero-width characters, unusual spacing, or specific Unicode patterns.
Can this tool detect all AI watermarks?
No tool can detect 100% of watermarks, as techniques are constantly evolving. Our detector identifies common patterns used by major AI models, but sophisticated watermarks may remain undetected.
Is this tool free to use?
Yes, this watermark detector is completely free and doesn't require registration or authentication. You can use it as many times as needed.
How accurate is the detection?
Accuracy depends on the watermarking technique used. We provide probability scores to indicate confidence levels. Higher scores suggest stronger evidence of watermarking.