What does this tool do?

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.

Why do invisible characters matter for SEO and publishing?

Hidden codes can break words, confuse search engines, and cause layout glitches such as odd line breaks, bad slugs, or malformed meta tags.

Which hidden characters does it detect?

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).

How do I use the tool?

Paste your text, click Scan, review the highlighted view, then copy the clean version.

Will it change my text’s visible content?

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

Can I keep legitimate soft hyphens or ZWJ for typography?

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

Where do these hidden characters come from?

They often come from copy-paste operations involving PDFs, word processors, messaging apps, exports, or right-to-left/complex-script handling.

Is my text sent anywhere?

No. The tool runs in your browser (client-side JavaScript). Your text is not uploaded to a server.

Does it support large texts?

It is designed for typical web copy and articles. Very large pastes may render slower in the highlighted view, but the clean copy still works.

What problems should I look for after cleaning?

Review URLs, slugs, titles, and meta descriptions for unexpected hyphenation or spacing, and verify headings and lists render correctly.

Invisible Character Detector & Text Cleaner Online

Free tools provided as-is. Please verify results before relying on them for critical tasks