Unicode normalization and invisible-character audit
Identify selected invisible code points and compare NFC/NFKC normalization in local text.
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Paste up to 10,000 characters. Text is kept in the browser. The audit lists selected zero-width, nonbreaking, bidirectional and control characters; it does not remove them automatically.
The starting values are hypothetical. Results update as you edit. Use aggregate or synthetic inputs only.
Calculation results
- Unicode code points
- 13
- UTF-16 code units
- 13
- NFC changes text
- Yes
- NFKC changes text
- Yes
- Flagged code points
- position 8 U+200B
- NFC preview
- Café AB ＡＢＣ
How to interpret the output
NFC composes canonically equivalent sequences; NFKC also folds compatibility distinctions and can alter meaningful identifiers or mathematical notation. Invisible characters can be legitimate in writing systems. A flagged code point is a review prompt, not proof of malicious text or an instruction to strip all Unicode.
Method referenceSource checked 2026-11-06. Read the reproducible calculator validation report.