Invisible Character ToolsInvisible Character Detector
Scan any text, highlight stealth Unicode characters instantly, and export a clean copy for reliable publishing.
Detection workspace
Paste any suspect string, run the detector, and inspect the highlighted blocks to see exactly where invisible characters hide.
Input text
Your content stays local—nothing is uploaded. We scan for Hangul Filler, zero-width spaces, BOM markers, non-breaking spaces, and (optionally) any whitespace matched by \\s.
Preview
Grey capsules mark hidden characters. Hover to reveal the Unicode code point and name.
Paste content to reveal invisible characters with instant highlights.
Summary
See which Unicode values appear and how often. Use this to confirm what the clean-up will remove.
| Character | Unicode | Name | Occurrences |
|---|---|---|---|
| No invisibles found — run the detector after pasting a sample. | |||
Cleaned output
Review the sanitised text. We keep new lines and regular spaces untouched.
Tech snippets
Drop these copy-ready examples into your codebase to automate invisible character detection or cleaning in your toolchain.
Regex
Match common invisible characters in any engine that supports Unicode escapes.
/[\u3164\u200B\u00A0\uFEFF]+/gDetector FAQ
Why does invisible text cause issues in my documents?
Hidden Unicode characters can break formatting, prevent searches from matching, or trigger moderation filters. Detecting them early ensures cleaner collaboration and safer publishing.
Will cleaning remove regular spaces or line breaks?
No. The cleaner only strips zero-width and placeholder characters defined in the detector. Regular whitespace, punctuation, and emoji are preserved exactly as entered.
Can I export a report of the detected characters?
You can copy or export the cleaned text directly. For deeper auditing, use the summary table to note which character types appeared and how often.
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