peartools

AI Text Cleaner

Paste text from ChatGPT, Claude, or Gemini and clean it up in one click. Remove invisible characters, swap non-breaking spaces for normal ones, turn em dashes and curly quotes into plain versions, and strip markdown asterisks and headings. Everything runs in your browser, so your text stays on your device.

0characters0words0lines
Cleaning options6 on
Invisible characters
Punctuation
Markdown
Whitespace
Paste your text, then clean it.
Result
0characters0words0lines

About cleaning AI text

What the AI text cleaner does

The AI text cleaner takes text from tools like ChatGPT, Claude, and Gemini and removes the marks that give it away or cause trouble later. AI output often carries invisible characters, non-breaking spaces, em dashes, curly quotes, and leftover markdown like asterisks and # heading signs. This tool strips those out and swaps fancy punctuation for plain versions, so the text reads naturally and pastes cleanly into documents, emails, code, and spreadsheets. It never changes your words, only the hidden characters, punctuation, and spacing you choose to clean.

Why use our AI text cleaner

  • ·Free. No signup, no paywall, no limits.
  • ·Runs in your browser. Nothing gets uploaded, your text stays with you.
  • ·Catches invisible characters. Removes zero-width spaces and other marks you cannot see.
  • ·You pick what to clean. Every option is a switch, so you keep the formatting you want.
  • ·Keeps your words. Only hidden characters, punctuation, and spacing change.

Cleaning options explained

Remove hidden characters

Deletes invisible characters like zero-width spaces, the byte order mark, and bidirectional marks. These are impossible to see but can break search, word counts, and code, and they are a common giveaway that text came from an AI tool.

BeforeHello​worldAfterHelloworld

Convert non-breaking spaces

Swaps non-breaking spaces and other exotic space characters for a normal space. Non-breaking spaces look identical to regular spaces but behave differently, which can cause odd line wrapping and failed text matches.

Before10 kgAfter10 kg

Normalize dashes

Turns em dashes and horizontal bars into a spaced hyphen, and en dashes into a plain hyphen. AI text leans heavily on em dashes, so this is one of the fastest ways to make writing read like a person wrote it.

BeforeWait—stopAfterWait - stop

Normalize quotes

Replaces curly (smart) quotes and primes with straight quotes. Straight quotes are safer for code, CSV files, and any system that mangles fancy quotes into strange symbols.

Before“Hi,” she saidAfter"Hi," she said

Convert ellipsis

Changes the single ellipsis character into three plain dots. The single character can render badly or copy oddly, and three dots are what most style guides expect anyway.

BeforeWell… maybeAfterWell... maybe

Remove markdown headings

Strips the leading # markers from markdown headings while keeping the heading text. Useful when you paste AI output into a plain document or email and do not want the raw # signs showing.

Before## SummaryAfterSummary

Remove asterisks

Deletes every asterisk. AI tools wrap bold and italic text in asterisks (**like this**), which show up as literal stars when pasted somewhere that does not render markdown.

BeforeThis is **bold**AfterThis is bold

Remove trailing whitespace

Removes spaces and tabs left at the end of each line. Trailing whitespace is invisible but can trip up diffs, code linters, and copy-paste into strict editors.

Beforeline Afterline

Collapse extra spaces

Squeezes runs of two or more spaces down to a single space within each line. Good for fixing uneven spacing without touching your line breaks.

Beforeone twoAfterone two

Collapse blank lines

Turns two or more blank lines in a row into a single blank line, so the spacing between paragraphs stays even.

Beforepara one↵ ↵ ↵ ↵ para twoAfterpara one↵ ↵ para two

When to clean AI text

Cleaning AI output saves trouble any time the text leaves the chat window. Here are the most common reasons people run it through a cleaner:

  • ·Making writing sound human. Remove the em dashes, curly quotes, and hidden marks that flag text as AI written.
  • ·Pasting into code or a terminal. Swap smart quotes and non-breaking spaces for plain ones so nothing breaks.
  • ·Moving text into a doc or email. Strip markdown asterisks and # heading signs so the output reads as plain text.
  • ·Fixing broken search and counts. Remove invisible characters that throw off find, word counts, and comparisons.
  • ·Cleaning data for a spreadsheet. Normalize quotes and spacing before pasting into a CSV or a column.

Frequently asked questions

How do I clean up AI text?
Paste text from ChatGPT, Claude, Gemini, or any other tool into the box above, pick the cleaning options you want, then click Clean text. The tool removes hidden characters and swaps fancy punctuation for plain versions. You can copy the result or download it as a .txt file.
What are the hidden characters AI tools add?
AI writing tools sometimes leave in invisible characters like zero-width spaces, the byte order mark, and bidirectional marks. You cannot see them, but they can break search, throw off word counts, and cause problems in code. Turn on 'Remove hidden characters' to strip them out.
Does this remove em dashes from AI text?
Yes. Turn on 'Normalize dashes' to change em dashes and horizontal bars into a spaced hyphen, and en dashes into a plain hyphen. Heavy use of em dashes is one of the most common signs that text was written by an AI tool.
Will it turn curly quotes into straight quotes?
Yes. Turn on 'Normalize quotes' to replace curly (smart) quotes and primes with straight quotes. This is useful when you paste text into code, a CSV file, or any system that does not handle fancy quotes well.
Can it strip markdown formatting like asterisks and headings?
Yes. Turn on 'Remove asterisks' to delete the stars around bold and italic text, and 'Remove markdown headings' to drop the # markers while keeping the heading text. This makes AI output paste cleanly into plain documents and emails.
Does the cleaner change the words in my text?
No. It only removes hidden characters and rewrites punctuation and spacing based on the options you choose. Your actual words are left exactly as they are.
Is the AI text cleaner free?
Yes, it's completely free with no signup, no limits, and no watermarks. Use it as often as you like.
Is my text safe and private?
Your text never leaves your browser. All processing runs locally on your device, so nothing is uploaded to a server. Once the page has loaded you can even use it offline.