Invisible Character Detector

Why hidden characters cause trouble

Text copied from websites, PDFs, WhatsApp or Word can carry characters you can't see. A zero-width space inside a password or coupon code makes it "wrong". A byte order mark at the start of a CSV breaks the first column name. A non-breaking space stops Excel from reading a number, and a right-to-left override can make a file name look different from what it is.

What is detected

• Zero-width space, joiner and non-joiner, and word joiner
• Byte order mark (BOM)
• Left-to-right and right-to-left marks, embeddings, overrides and isolates
• No-break, narrow, thin, figure and other special spaces
• Soft hyphens, Hangul filler, braille blank and control characters

Hover over a highlighted mark to see its name and Unicode code. The cleaned copy removes them and turns special spaces into normal ones. Zero-width joiners are kept by default, because Urdu, Persian and emoji need them. For more clean-up (extra spaces, blank lines, curly quotes), use the Text Cleaner.