AI Text Cleaner

You copy text from ChatGPT. Paste it into your document. And suddenly your formatting looks broken.

Weird line breaks everywhere. Extra spaces between words. Sometimes, characters you can’t even see mess up your layout.

Here’s the thing: AI tools, PDFs, and websites don’t just give you clean text. They sneak in hidden Unicode characters that wreck your formatting. Those invisible gremlins make your content look unprofessional. They break your code. They waste hours of manual cleanup.

That’s where Feedough’s Text Cleaner comes in. One click removes all the junk. Whether you’re cleaning AI-generated content or wrestling with PDF text, this tool handles it instantly. Copy messy text in. Get clean text out.

What Is an AI Text Cleaner?

AI text cleaner is a tool that strips unwanted formatting and invisible characters from your content. It’s like a digital eraser that removes all the junk hiding in your text while keeping the actual words intact. You paste messy text in, click once, and get clean, ready-to-use content out.

The issues it fixes are surprisingly common. Zero-width spaces and other hidden characters can break your code or mess up word counts without you even seeing them. You might also get inconsistent quotes that look fine but cause publishing errors. 

AI tools love adding markdown symbols like ### for headings or **text** wrapped in asterisks for emphasis. Plus, there are those annoying extra spaces and line breaks that PDF extraction often creates.

So when do you actually need this? If you’re publishing AI-generated content, you’ll want to clean it before it goes live on your site. Copying text from PDFs almost always leaves weird artefacts that need fixing. You might also use it to standardise formatting when you’re pulling content from multiple sources into one document. Anyone preparing text for web use knows that invisible characters can break layouts or cause unexpected behaviour.

How to Use Feedough’s AI Text Cleaner?

The cleaning process takes about 15 seconds from start to finish. You don’t need to install anything or create an account. Just paste, click, and you’re done.

Step 1: Paste Your Text

Copy your messy text from anywhere, ChatGPT, a PDF, Google Docs, or an email. Then paste it into the input box on the left side of the tool. The tool handles everything from a single paragraph to thousands of words.

Step 2: Select Cleaning Options

Right below the input box, you’ll see eight cleaning options. Each one tackles a specific formatting problem:

• Remove hidden characters – Eliminates invisible Unicode characters that break formatting in content management systems and databases.
• Convert non-breaking spaces – Changes non-breaking spaces (which prevent line breaks) to regular spaces so text wraps normally.
• Normalise dashes – Standardises all dash types (em dashes, en dashes, hyphens) to consistent formatting.
• Normalise quotes – Converts smart quotes (” “) to straight quotes (“) that work in code and plain text environments.
• Convert ellipsis – Changes ellipsis characters (…) to three periods (…) for better compatibility.
• Remove trailing whitespace – Deletes extra spaces at the end of lines that mess up line breaks and spacing.
• Remove asterisks – Strips asterisks that AI tools like ChatGPT add for emphasis or markdown formatting.
• Convert markdown headings – Removes # symbols from headings. ChatGPT adds these markdown symbols to structure its responses, but they clutter your text when you paste it elsewhere.

All options are pre-selected by default. Uncheck any you want to keep in your final text.

Step 3: Clean, Copy and Use

Click the “Clean Text” button. The tool processes your text instantly and displays the cleaned version in the output panel on the right.

Your cleaned text appears in the right panel, ready to use. Click “Copy to Clipboard” to grab it in one click. Want to see what changed? Hit “See Changes” to view a side-by-side comparison of before and after. If you need to start over, the “Reset” button clears everything and brings back the default settings.

Common Text Issues The AI Text Cleaner Fixes

Text problems come in all shapes and sizes, and most of them are completely invisible until they break something. Here’s what the tool catches and cleans up automatically.

1. Hidden Unicode Characters from AI Text

AI models like ChatGPT and Claude sometimes insert zero-width spaces (U+200B) into their output. According to research on AI watermarking techniques, these invisible characters serve as watermarks to identify AI-generated content. You can’t see them, but they break word searches, mess up character counts, and cause random errors when you paste text into code editors or CMS platforms.

2. Inconsistent Quotation Marks

Smart quotes (“curly” ones) and straight quotes (“plain” ones) look similar but aren’t the same character. When you copy text from Word into a web form or code editor, mixing these types causes search failures and syntax errors. The tool standardises everything to straight quotes so your text works everywhere without surprises.

3. AI-Generated Asterisks and Markdown

ChatGPT and Claude love formatting their responses with **bold text** and ### headings because they’re trained on markdown. That’s great for their interface but looks ***** when pasted into emails or documents. The cleaner strips out these formatting symbols while keeping your actual content intact, giving you clean, professional text.

4. PDF Copy-Paste Artefacts

When you copy text from a PDF, it often comes with broken paragraphs, random line breaks, and conjoined words like “thisexample” where spaces should be. PDF conversion issues happen because PDFs store text visually, not structurally. The tool reconnects fragmented sentences and fixes spacing so your content reads naturally again.

5. Extra Whitespace and Non-Breaking Spaces

Trailing spaces at line ends and non-breaking spaces (U+00A0) are invisible but cause layout issues in web content and code. Non-breaking spaces prevent text from wrapping where it should, creating awkward formatting. The cleaner removes all extra whitespace and converts special space characters to regular ones.

6. Mixed Dash Types

Em dashes (—), en dashes (–), and regular hyphens (-) serve different purposes, but mixing them inconsistently looks sloppy. Word processors auto-convert hyphens to em dashes, creating inconsistency when you combine text from multiple sources. The tool normalises all dashes to your preferred type so your writing looks polished and professional.

Benefits of Using Feedough’s AI Text Cleaner

Cleaning text manually is a time sink you don’t need. Efficient content workflows make the difference between finishing projects on time or drowning in busywork. This tool strips away that tedious formatting work so you can focus on what actually matters, your content.

• Instant Cleaning – Your text gets processed in seconds. Click the cleaning option, and it’s done before you can even think about doing it manually.
• Multiple Cleaning Options – Eight different fixes let you target exactly what’s messing up your text. Remove extra spaces, fix line breaks, strip HTML, or clean everything at once.
• Completely Free – No sign-up forms. No payment walls. Just paste your text and clean it. That’s it.
• Preserves Your Content – The tool only removes formatting junk, never touches your actual words. Your carefully written content stays exactly as you wrote it.
• See What Changed – Click “See Changes” and you’ll spot exactly what got cleaned. No surprises, no wondering if something disappeared.
• Privacy-Focused – Your text gets processed securely and never stored anywhere. What you paste stays between you and the tool.
• Works with Any Text – Whether it’s from AI generators, PDF exports, web pages, or Word documents, this tool handles whatever messy text you throw at it.
• No Technical Knowledge Needed – The interface is straightforward. Paste text, pick what to clean, click the button. Even if you’ve never used a text tool before, you’ll figure this out in 10 seconds.

Frequently Asked Questions