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Clean AI-Generated Text — Remove Markdown from ChatGPT, Claude & GPT Output

Strips Markdown formatting and normalizes punctuation in text copied from ChatGPT, Claude, Gemini, or any other AI tool. Headers, bold and italic markers, links, bullet syntax, and code fences are removed to produce clean plain text. Everything runs locally in your browser — the text you paste is never sent to a server.

Paste AI-generated text below to strip Markdown and normalize punctuation before pasting it elsewhere.

About this tool

AI Text Cleaner strips Markdown syntax — headers, bold and italic markers, inline code and code fences, links, blockquotes, and bullet markers — so AI-generated text pastes cleanly into emails, forms, CMS fields, and any other plain-text context. It also normalizes typography by replacing em dashes (—) and converting curly quotes to straight quotes, two common artifacts of AI writing that can look out of place in human-authored documents. All three cleanup options can be toggled independently.

How to use

  1. Paste the AI-generated text into the top box.
  2. Toggle the cleanup options you want: Remove Markdown, Replace em-dashes, or Straight quotes.
  3. The cleaned text appears instantly in the bottom box. Click "Copy cleaned text" to copy it.

When to use this tool

  • Pasting a ChatGPT or Claude reply into an email, Slack message, or form field that doesn't render Markdown.
  • Removing heading, bold, and bullet syntax before pasting AI output into a plain-text document or CMS.
  • Stripping em dashes and curly quotes that make pasted text look machine-generated in style-sensitive editors.
  • Cleaning up GPT output before submitting it to a system that rejects Markdown characters.

Frequently asked questions

What does this AI text cleaner remove?

It strips headers (#), bold (**text**) and italic (*text*) markers, inline code and code fences, links ([text](url) becomes text), blockquotes (>), horizontal rules (---), and converts bullet markers (-, *, +) into a plain bullet prefix.

Does it work with ChatGPT, Claude, and Gemini output?

Yes. All major AI tools produce Markdown-formatted text. This cleaner strips the Markdown syntax regardless of which AI generated it.

What does "Replace em-dashes" do?

It replaces every em dash (—) with a comma. Em dashes are a common signature of AI-generated text. You can toggle this option off if you want to keep them.

What does "Straight quotes" do?

It converts curly (typographic) quotes — " " ' ' — to straight ASCII quotes. Toggle this off if you want to keep them.

Is my text sent to a server?

No. All cleanup runs entirely in JavaScript in your browser. Nothing you paste is transmitted or saved.

Does it work without an internet connection?

Yes. Once the page has loaded, all processing runs locally. You can use it offline.

Does it remove all Markdown, or just some of it?

It removes the Markdown syntax most common in AI output: headers, bold, italic, inline code, code blocks, links, blockquotes, bullet points, and horizontal rules. Unusual or nested Markdown constructs may not be handled.

Is this tool free?

Yes, completely free with no sign-up required and no usage limits.

Everything is processed locally in your browser — the text is never sent to a server.