Invisible Character Detector
Find and remove hidden characters like zero-width spaces, BOM markers, and other invisible unicode.
Input Text
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Total Characters
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Invisible Found
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Zero-Width
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Control Chars
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BOM Markers
Detected Invisible Characters
No invisible characters detected yet. Paste text and click "Detect".
Preview (invisible characters highlighted)
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Common Invisible Characters Reference
Zero Width Space U+200B
Zero Width Non-Joiner U+200C
Zero Width Joiner U+200D
Word Joiner U+2060
BOM (Byte Order Mark) U+FEFF
Soft Hyphen U+00AD
No-Break Space U+00A0
Line Separator U+2028
Paragraph Separator U+2029
Left-to-Right Mark U+200E
Right-to-Left Mark U+200F
Object Replacement U+FFFC
🔒 Privacy First: All detection happens locally in your browser. No data is sent to any server.
What are Invisible Characters?
Invisible characters are Unicode characters that don't display visually but can affect text processing, cause bugs in code, or be used maliciously. They include zero-width spaces, control characters, BOM markers, and various formatting characters.
Why Detect Invisible Characters?
- Debug string comparison failures in code
- Clean copied text from websites or documents
- Detect potential security issues (homograph attacks)
- Fix encoding issues in data files
- Clean user input before database storage
Related Utilities
Explore our other free text tools: Whitespace Normalizer, Character Counter, HTML Entity Encoder, and Diff Checker.