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Remove Invisible Characters & Hidden Unicode — Free Online
Detect and strip zero-width spaces, U+202F narrow spaces, BOMs and other hidden unicode from text — including the characters reported as ChatGPT watermarks.
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Your cleaned text will appear here.
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LLM output and copy-pasted web text often carry invisible unicode: zero-width spaces, word joiners, narrow no-break spaces (U+202F — a known GPT-5 artifact), BOMs and directional marks. They break search, diffs, character counts and code. This page detects them, shows you exactly what was found and where, and strips them.