AI Text Cleaner — Invisible Characters & Artifacts
AI Text Cleaner inspects text for the invisible Unicode characters and typographic artifacts that AI assistants and word processors leave behind: zero-width spaces and joiners, non-breaking spaces, soft hyphens, directional marks, curly "smart" quotes, em dashes and stray markdown syntax. These break code, corrupt data files, trip up form validation and reveal copy-pasting. The cleaner shows every hidden character in place — highlighted, named and counted — then removes or normalizes exactly the categories you choose. Nothing you paste leaves your browser.
Last updated: July 2026
To find hidden characters in text, paste it here — zero-width spaces, non-breaking spaces, soft hyphens, directional marks and other invisible Unicode are detected, counted and highlighted so you can see exactly where they sit. One click removes them, and optional filters also normalize smart quotes to straight quotes, em dashes to regular dashes, and strip leftover markdown symbols. Everything runs locally.
🔒 Detection and cleaning run entirely in your browser — nothing you paste is uploaded.
How to use AI Text Cleaner — Invisible Characters & Artifacts
- Paste your text — hidden characters are highlighted and counted immediately.
- Choose what to clean: invisible characters, smart quotes, em dashes, markdown artifacts.
- Copy the cleaned text.
Frequently asked questions
How do I find invisible characters in my text?
Paste it here — every invisible or non-standard character is highlighted in place with its Unicode name (e.g. U+200B ZERO WIDTH SPACE), plus a per-type count, so you know exactly what's hiding in the text.
Where do these hidden characters come from?
AI chat interfaces, word processors, web pages and messaging apps all insert them — non-breaking spaces from layout, zero-width joiners from emoji, soft hyphens from justification, smart quotes from autocorrect. They survive copy-paste invisibly.
Why do they matter?
They break source code and JSON, cause "invalid character" errors in forms and compilers, corrupt CSV imports, defeat exact-match searches — and they're a well-known tell of pasted AI text.
Will cleaning change my actual words?
No — only the characters in the categories you enable are removed or normalized (e.g. " " → " ", “smart” → "straight"). The visible wording is untouched.
Is my text uploaded?
No — detection and cleaning run entirely in your browser.
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