Invisible Code Detector

Have you ever copied text that looked normal but wouldn’t format correctly?

Invisible characters like zero-width spaces, soft hyphens, and control marks

can break your SEO, mess up layouts, and cause publishing errors.

Use this free online tool to highlight hidden codes and instantly generate a

clean, copy-ready version of your text.

  • A: It scans your text for hidden Unicode characters (e.g., zero-width spaces, soft hyphens, bidi marks) and shows a highlighted view plus a clean, copy-ready version. text goes here

  • A: Hidden codes can break words, confuse search engines, and cause layout glitches (e.g., odd line breaks, bad slugs, or malformed meta tags).

  • A: Zero-width space (U+200B), ZWNJ (U+200C), ZWJ (U+200D), word joiner (U+2060), soft hyphen (U+00AD), BOM/FEFF (U+FEFF), bidi marks (LRM/RLM, LRE/RLE/PDF/LRO/RLO, LRI/RLI/FSI/PDI), Arabic Letter Mark (U+061C), and ASCII control characters (except tab, newline, and carriage return).

  • A: Paste text → click Scan → review the highlighted view → copy the Clean version. That’s it.

  • A: Only the clean output removes invisible codes. The highlighted view is just for inspection.

  • A: Yes—use the highlighted view to see exactly where they are and copy the original if you need to preserve them. The clean output removes them by default.

  • A: Usually from copy-paste (PDFs, word processors, messaging apps, CMS exports) and right-to-left/complex-script text handling.

  • A: No. The tool runs in your browser (client-side JavaScript). Your text isn’t uploaded to a server.

  • A: It’s designed for typical web copy and articles. Extremely large pastes may feel slower in the highlighted view; the clean copy still works.

  • A: Check URLs, slugs, titles, and meta descriptions for unexpected hyphenation or spacing; verify heading breaks and bullet lists render correctly.