Which AI tools does the Universal Sanitizer support?

All of them. The sanitizer targets the complete Unicode watermark spectrum rather than tool-specific patterns, so it works with ChatGPT, Claude, Gemini, Jasper, Copy.ai, Writesonic, Rytr, Midjourney prompt outputs, and any custom LLM pipeline.

What if my AI tool isn't listed?

No problem. The sanitizer removes all known invisible Unicode characters and normalises all non-standard punctuation regardless of source. Unknown tools are handled by the universal ruleset.

Will it remove content or only hidden characters?

Only hidden characters and non-standard punctuation are changed. Words, sentences, and paragraphs are untouched.

Is my content private?

Yes. Processing is entirely local to your browser. Nothing is transmitted to any server.

How is this different from the tool-specific cleaners?

Tool-specific cleaners (ChatGPT, Claude, Gemini) apply targeted patterns for each platform. The Universal Sanitizer applies all patterns at once, making it ideal when you don't know the source or are mixing outputs from multiple tools.

Free AI Text Cleaner

Universal AI Text Sanitizer

Remove hidden characters and AI watermarks from any AI writer — Writesonic, Rytr, Midjourney prompts, custom LLM pipelines — free, private, browser-based.

Paste Your Text

Characters 0/10,000

Supports text from ChatGPT, Claude, and other AI assistants

Your text is processed locally. We do not store your data.

Upload Files

Drag & drop files or

Browse Files

Supported: .txt, .docx, .pdf (max 10MB, up to 10 files)

Cleaning Settings

Original Text

0 characters

Paste or type text to analyze...

Cleaned Text

0 characters

Cleaned text will appear here...

Your text is processed locally. We do not store your data.

Not all AI writers are created equal, but they all share one trait: they embed non-standard characters, invisible Unicode, and typographic punctuation that human writers never insert. The Universal AI Text Sanitizer covers the complete Unicode watermark spectrum and handles output from any tool — named or unnamed — without needing to know the source.

Hidden characters common to all AI writers

Regardless of which AI tool generated your text, the same families of hidden characters appear across the industry.

Zero-width characters (full set)

U+200B, U+200C, U+200D, U+FEFF, U+00AD

Every known AI writer uses some combination of zero-width spaces, joiners, non-joiners, byte-order marks, and soft hyphens. The sanitizer removes them all.

Typographic punctuation

U+2014, U+2013, U+2018–U+201D, U+2026

Em dashes, en dashes, curly quotes, and ellipsis characters are universally preferred by AI language models over their ASCII equivalents.

Non-breaking & special spaces

U+00A0, U+202F, U+2009

AI writers substitute regular spaces with non-breaking, narrow non-breaking, and thin spaces in various contexts.

HTML data attributes

data-message-id, data-sourcepos, class

Web-based AI tools embed HTML attributes in copied text. The sanitizer strips all common AI-sourced data attributes from HTML content.

How to sanitize any AI text in 3 steps

1
Paste or upload
Paste text from any AI tool, or upload .txt, .docx, or .pdf files. Up to 10 files in one batch.
2
Full-spectrum scan
The sanitizer runs the complete Unicode watermark detection suite — over 40 character patterns — against your content.
3
Review & export
Every change is shown in the diff view. Download or copy the fully sanitised text.

Before & after universal sanitization

Before — contains hidden markers

AItools‌ are transforming—content—creation… Here’s what you need to know.

After — clean, standard Unicode

AI tools are transforming-content-creation... Here's what you need to know.

Frequently asked questions about Universal AI watermarks

Which AI tools does the Universal Sanitizer support?: All of them. The sanitizer targets the complete Unicode watermark spectrum rather than tool-specific patterns, so it works with ChatGPT, Claude, Gemini, Jasper, Copy.ai, Writesonic, Rytr, Midjourney prompt outputs, and any custom LLM pipeline.
What if my AI tool isn't listed?: No problem. The sanitizer removes all known invisible Unicode characters and normalises all non-standard punctuation regardless of source. Unknown tools are handled by the universal ruleset.
Will it remove content or only hidden characters?: Only hidden characters and non-standard punctuation are changed. Words, sentences, and paragraphs are untouched.
Is my content private?: Yes. Processing is entirely local to your browser. Nothing is transmitted to any server.
How is this different from the tool-specific cleaners?: Tool-specific cleaners (ChatGPT, Claude, Gemini) apply targeted patterns for each platform. The Universal Sanitizer applies all patterns at once, making it ideal when you don't know the source or are mixing outputs from multiple tools.

Clean text from other AI tools

ChatGPT Remover

Targeted removal of ChatGPT-specific zero-width characters and HTML data attributes.

Claude Cleaner

Remove em dashes, non-standard punctuation, and invisible artefacts from Claude outputs.

Jasper Cleaner

Remove hidden whitespace, em dashes, and invisible artefacts from Jasper AI content.

Or return to the main watermark eraser to clean text from any AI tool.