Learn how hidden characters can track you and how TextSanitize.com protects your privacy
Invisible characters are Unicode symbols that don't display visually but exist in your text. They can cause issues when copying, pasting, or processing text.
↑ Contains a zero-width space that's invisible but breaks word matching
✓ Clean text with no hidden characters
Statistical watermarks are invisible tracking marks embedded in text using patterns of spaces, line breaks, or zero-width characters. They're used to:
Original Text (appears normal):
Hidden Reality (what's actually there):
⚠️ Hidden line feeds (U+000A) create a unique fingerprint
After TextSanitize.com removes watermarks:
✓ All tracking marks removed - truly clean text
💡 Did you know? Some websites and AI tools add these watermarks automatically. When you copy text, you might be carrying invisible tracking information without knowing it!
We automatically scan your text for over 60+ types of invisible characters and statistical watermarks
Our algorithms remove tracking marks while preserving your text's formatting and meaning
We show you exactly what we found and removed, including Unicode codes and character names
Your text is processed securely and never stored without your permission
✨ Pro users get 100,000 characters per cleanup with unlimited cleanups!
Try TextSanitize.com Now →Watermarks can track how you share information, revealing your identity even in anonymous contexts
Hidden characters can break code, databases, or automated systems that process text
Ensure your text is truly clean for publications, websites, or legal documents
Join thousands of users who trust TextSanitize.com to remove invisible characters and statistical watermarks from their text.
Free tier: 1,000 characters • Pro tier: 100,000 characters • Unlimited cleanups