Tool
Paste text and see whether it contains invisible characters, special spaces or zero-width Unicode.
Analysis runs in your browser. The text is not sent to our servers.
Maximum 20,000 characters.
Paste some text and press Analyze text to see whether it contains invisible characters, special spaces, or zero-width Unicode.
The detector scans the text in your browser for a specific set of codes: blank-looking fillers and zero-width characters. It does not rewrite the original; it tells you what is there.
It recognizes Braille Blank, Hangul Filler, Zero Width Space, Zero Width Non-Joiner and Zero Width Joiner. Other special Unicode may not appear. A ZWJ inside an emoji does not mean someone pasted an empty message.
Help
Privacy, coverage and how the text is analyzed.
You paste text and press Analyze. The detector scans the string in your browser.
Braille Blank (U+2800), Hangul Filler (U+3164), Zero Width Space (U+200B), Zero Width Non-Joiner (U+200C) and Zero Width Joiner (U+200D).
No. Analysis runs in your browser.
Tools
The generator is the starting point. The detector and guides help you see which character you are using.