AI Text Cleaner AI & Writing
Strip the giveaways from AI-written text: em dashes, curly quotes, hidden characters and the phrases models overuse.
AI Text Cleaner is a free online tool that strip the giveaways from AI-written text: em dashes, curly quotes, hidden characters and the phrases models overuse. It runs entirely in your web browser using plain JavaScript, so files are processed on your own device and never uploaded to a server. There is no sign-up, no file size limit imposed by the site, no watermark and no paid tier.
- Price
- Free — no account, no quota, no watermark
- Category
- AI & Writing
- Where it runs
- In your browser, on your device
- Files uploaded
- None
- Technology
- plain JavaScript
- Settings
- 6
- Works offline
- Yes, after the first visit
About AI Text Cleaner
Three separate things make text read as machine-written, and only two of them are visible. There are typographic characters no ordinary keyboard produces easily — curly quotes, em dashes, ellipsis glyphs. There are invisible characters that arrive when text is copied out of a web interface. And there is vocabulary: a set of words current models reach for far more often than people do. This removes the first two and reports the third, because "delve" and "robust" are real words that sometimes belong.
How to use it
- Paste the text you want to run through ai text cleaner.
- Set replace em and en dashes, straighten curly quotes and apostrophes and remove zero-width and non-breaking characters and the remaining options.
The 6 settings
| Setting | What it does | Default |
|---|---|---|
| Replace em and en dashes | On or off. On by default. | On |
| Straighten curly quotes and apostrophes | On or off. On by default. | On |
| Remove zero-width and non-breaking characters | On or off. On by default. | On |
| Flag overused phrases | On or off. On by default. | On |
| Delete filler connectives outright | On or off. Off by default. | Off |
| Strip emoji | On or off. Off by default. | Off |
Under the hood
| Runs on | plain JavaScript — runs the whole thing |
| Controls | Replace em and en dashes, Straighten curly quotes and apostrophes, Remove zero-width and non-breaking characters, Flag overused phrases, Delete filler connectives outright, Strip emoji |
Questions
Can this make my text pass an AI detector?
That is the wrong question to ask a tool, because AI detectors do not work reliably in either direction. They flag human writing routinely — with a documented bias against non-native English writers — and miss lightly edited model output. Use this to make text read better, not to beat a checker whose output is close to a coin flip on individual documents.
Why does it list phrases instead of deleting them?
Because deleting a word does not fix a sentence built around it. "Delve into the intricate tapestry" does not improve by becoming "into the intricate tapestry" — it needs rewriting. The connectives option is different: "Furthermore," at the start of a sentence is pure filler and deleting it is genuinely an improvement.
What invisible characters does it find?
Zero-width spaces, zero-width joiners, non-breaking spaces, byte order marks and soft hyphens. They come along with text copied from chat interfaces and web pages, they count toward every length limit, and they break string comparisons while being completely invisible.
Is my text sent anywhere?
No. There is no upload endpoint on this site at all — the processing is JavaScript in your browser. Given that people paste drafts, cover letters and coursework into tools like this, that is worth being specific about.