Practical Unicode guides

Hidden Character Detector Blog

Clear explanations for writers, developers, editors, and anyone who needs to understand text that looks ordinary but behaves unexpectedly.

Magnifying glass revealing highlighted invisible marks and U+200B in a text string

What Is a Hidden Character? Types, Codes & Examples

Learn what hidden characters are, how zero-width spaces and Unicode controls work, and why code points matter when text looks normal.

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AI text moving through copy, paste, document formatting, and Unicode inspection stages

Why AI-Generated Text Contains Invisible Characters

Understand how formatting pipelines can add invisible Unicode characters and what their presence can and cannot prove about AI text.

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Three-step paste, detect, clean workflow showing hidden marks removed from a text sample

How to Remove Invisible Characters from Text

Follow a practical workflow for finding zero-width spaces, reviewing code points, cleaning Unicode formatting, and checking the result.

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