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Clean & Paste — The Best Free
Invisible Unicode Character Cleaner

Instantly remove invisible characters from AI-generated text. Our free unicode invisible character remover cleans zero width spaces, byte order marks, and hidden AI watermarks in seconds.

Just clean and paste. Simple as that.

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Remove Invisible Characters Instantly

Paste your AI text below and click clean. Our free invisible character cleaner removes all hidden unicode characters and AI watermarks.

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Cleaned output

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Need Fully Human-Sounding Text?

Removing invisible characters is just the first step. Our advanced AI Humanizer rewrites AI-generated content to sound completely natural and bypass all AI detectors.

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Why Use Clean & Paste?

The most reliable free invisible character cleaner for removing AI watermarks and hidden unicode characters.

Instant Processing

Remove invisible characters in milliseconds. No waiting, no queues.

100% Private

Your text never touches our servers. Everything runs in your browser.

Free Forever

No sign-ups, no fees, no limits. Clean AI text as much as you need.

AI Watermark Remover

Detect and remove hidden AI watermarks embedded as invisible unicode.

Zero Width Remover

Eliminate zero-width spaces, joiners, and format characters instantly.

Clean AI Text

Sanitize text from ChatGPT, Claude, Gemini, and other AI tools.

What Are Invisible Unicode Characters?

Invisible Unicode characters are special non-printable characters that exist in text but don't display visually. They belong to the Unicode "Cf" (Format) category and are often used by AI tools to watermark generated content.

Common Invisible Characters Removed

Code Point	Name	Description
`U+200B`	Zero-Width Space	Invisible space with no width
`U+200C`	Zero-Width Non-Joiner	Prevents character joining
`U+200D`	Zero-Width Joiner	Joins characters together
`U+FEFF`	Byte Order Mark (BOM)	Marks byte order in text
`U+2060`	Word Joiner	Prevents line breaks
`U+00AD`	Soft Hyphen	Invisible hyphenation point
`U+034F`	Combining Grapheme Joiner	Affects character rendering
`U+061C`	Arabic Letter Mark	Controls bidirectional text

Why AI Tools Use Invisible Characters

AI companies embed invisible Unicode characters as watermarks to track and identify AI-generated content. These hidden markers are strategically placed within the text, allowing detection systems to identify AI output even after copying and pasting.

Content tracking and attribution
AI detection by plagiarism checkers
Fingerprinting unique outputs

Why You Should Clean AI Text

Removing invisible characters before publishing ensures your content is clean and professional. Hidden watermarks can cause unexpected issues and may flag your content as AI-generated.

Avoid AI detection in academic settings
Ensure clean copy for professional use
Prevent formatting issues in publishing

Frequently Asked Questions

Everything you need to know about removing invisible unicode characters.

What are invisible Unicode characters?

Invisible Unicode characters are non-printable characters that exist in text but don't display visually. Common examples include Zero-Width Space (U+200B), Zero-Width Non-Joiner (U+200C), Zero-Width Joiner (U+200D), and Byte Order Mark (U+FEFF). These characters are part of the Unicode Cf (Format) category.

Why do AI tools add invisible characters to text?

AI tools often embed invisible Unicode characters as watermarks to track and identify AI-generated content. These hidden markers allow companies to detect when their AI's output is being used, even after the text has been copied and pasted elsewhere.

How do I remove invisible characters from AI-generated text?

Use Clean & Paste, a free invisible character cleaner. Simply paste your AI text into the input field, click the 'Clean & Paste' button, and copy the cleaned output. This removes zero width characters, byte order marks, and other hidden Unicode characters.

Is Clean & Paste free to use?

Yes, Clean & Paste is completely free. There are no sign-ups, no limits, and no hidden fees. You can clean as much AI text as you need without any restrictions.

What invisible characters does Clean & Paste remove?

Clean & Paste removes all common invisible Unicode characters including Zero-Width Space (U+200B), Zero-Width Non-Joiner (U+200C), Zero-Width Joiner (U+200D), Byte Order Mark (U+FEFF), Word Joiner (U+2060), and all characters in the Unicode Cf (Format) category.