ToolFeather

AI Text Cleaner — Remove AI Formatting Artifacts

Paste text from ChatGPT, Claude or Gemini and strip the formatting quirks that make it look machine-made — em dashes, curly quotes, hidden characters and all.

AI Text Cleaner

🔒 Nothing you enter is sent anywhere or stored. All processing happens in your browser.

How it works

Text that comes out of a large language model, a word processor, or a PDF is rarely plain. It is peppered with typographic flourishes your reader never sees but every system notices: curly “smart” quotes, em-dashes, non-breaking spaces, and zero-width characters that survive a copy-paste and quietly break code snippets, CSV files, search matches, and plagiarism or AI detectors.

This cleaner runs seven independent fixes in a single pass, and you decide which ones apply. It straightens smart quotes and apostrophes back to " and ', turns em- and en-dashes into a normal hyphen, deletes invisible and zero-width characters, converts non-breaking and other exotic unicode spaces to ordinary spaces, collapses repeated spaces, trims trailing whitespace from every line, and squashes long runs of blank lines down to one. The status line tells you exactly how much it changed.

Everything happens in your browser with no upload, so you can safely clean confidential drafts, client copy, or anything you would rather not paste into a random website. Clean live as you type, or paste first and press Clean text.

Examples

Paste from ChatGPT → Clean text → smart quotes and em-dashes become plain characters ready for code, email, or a CMS.
Copied a paragraph from a PDF → stray non-breaking spaces and soft hyphens are removed so the text reflows normally.
A blog draft with random double spaces and triple blank lines → tidy single spacing and consistent paragraph gaps.
Uncheck Em/en dashes → hyphen if you want to keep your dashes but still strip the invisible junk.

What gives AI-generated text away

Large language models write clean prose, but they leave consistent formatting fingerprints that rarely appear in text typed by a person on a normal keyboard. None of these are about what is written — they're mechanical artifacts of how the text was produced and pasted. This tool targets exactly those artifacts:

ArtifactWhat it looks likeWhy it signals AI
Em dash —A long dash with no spaces, used mid-sentenceModels lean on em dashes heavily; most people type a hyphen or comma instead
Curly quotes “ ” ’Typographic “smart” quotesWord processors and AI output them; plain keyboards produce straight quotes
Zero-width space (U+200B)Invisible — you can't see it at allAlmost never typed by hand; a strong copy-paste/AI tell
Non-breaking space (U+00A0)Looks like a normal spaceCommon in AI and web copy; breaks word counts and code
Doubled spaces / blank linesExtra gaps between words or paragraphsInconsistent spacing from concatenated model output

Cleaning these makes text look hand-written and, just as importantly, prevents the invisible characters from breaking spreadsheets, code, CMS fields, and search. Tick only the transforms you want — for example, keep curly quotes for a blog post but still strip zero-width characters.

Frequently asked questions

What are invisible characters and why remove them?
They are zero-width spaces, joiners, byte-order marks, and soft hyphens that take up no visible width but still exist in the text. They can break word matching, corrupt code, inflate character counts, and act as fingerprints, so removing them makes text truly plain.
Will it change the meaning of my writing?
No. It only swaps typographic characters for their plain equivalents and cleans up spacing. Words, sentences, and their order are never touched.
Does this make AI text undetectable?
It does not rewrite anything, so it cannot fool a detector that analyses phrasing. It simply removes formatting artifacts some tools flag, which is useful for legitimately publishing clean text.
Can I keep smart quotes but fix everything else?
Yes. Every fix has its own checkbox. Untick the ones you want to skip and the rest still run.
Is my text uploaded anywhere?
Never. All processing runs locally in your browser, so sensitive drafts and client work stay entirely on your device.
What does the AI Text Cleaner actually remove?
It normalises the formatting AI models tend to add: em and en dashes become hyphens, curly “smart” quotes become straight quotes, invisible/zero-width characters are stripped, non-breaking and other unusual spaces become normal spaces, and runs of spaces or blank lines are collapsed. The words themselves are never changed.
Will cleaning the text remove AI detection?
No tool can guarantee that, and this one doesn't claim to. It removes the mechanical formatting tells (like em dashes and zero-width characters) and tidies spacing, but the phrasing and structure of your writing are untouched. Treat it as a formatting cleaner, not a 'humanizer'.
Why does AI text have invisible characters?
They usually creep in through copy-paste, from the web page or editor the text passed through, or from Unicode the model emitted. Zero-width spaces and non-breaking spaces are invisible on screen but can break code, search, and word counts — which is why removing them matters.
Is my text uploaded anywhere?
No. All cleaning happens locally in your browser with JavaScript, so even sensitive drafts never leave your device.
Does it change British vs American spelling or grammar?
No. It only touches punctuation characters, invisible characters and whitespace. Spelling, grammar and word choice are left exactly as you wrote them.