Frequently Asked Questions

AI watermarks are invisible characters, like zero-width spaces, that some AI tools insert into generated text. They don't affect readability, and their presence or absence has no bearing on whether AI-detection tools flag the text.

Our tool scans your text for invisible characters commonly used as AI watermarks, such as zero-width spaces and ASCII control characters. It then highlights these markers and can remove them completely while preserving your original content.

No. All text processing happens directly in your browser. We don't store, log, or transmit your text anywhere. Your privacy is our priority.

We detect various invisible characters including zero-width spaces, zero-width joiners, soft hyphens, word joiners, and ASCII control characters that AI tools might use as watermarks.

No. The tool only removes invisible characters used as watermarks. Your visible text, formatting, and meaning remain exactly the same.

Yes, the free version currently has a 500-character limit per operation. Signed-in users get 1,500 characters. This helps ensure fast processing and optimal performance.

Yes! You can upload Word (.docx) documents directly to our tool. We'll scan and remove invisible watermark characters from all sections including main content, headers, footers, footnotes, and comments—all while preserving your document's formatting and layout. Processing happens entirely in your browser, so your documents remain private.

Yes! You can upload Apple Pages (.pages) documents directly to our tool. We support both modern and legacy Pages formats. We'll scan and remove invisible watermark characters from your entire document while preserving all formatting, styles, and layout. All processing happens locally in your browser, ensuring your documents stay completely private.

Your documents are 100% secure and never leave your device. All document processing happens entirely in your browser using JavaScript. When you upload a Word or Pages document, it's read and modified locally on your computer—we never send your files to any server. This means your sensitive documents, personal information, and private content remain completely confidential. Even we can't see what you're processing. This client-side approach ensures maximum privacy and security for your documents.

If you clean a document using our document uploader and then copy-paste the text into the text detection area, you might see watermarks detected. This is normal and doesn't mean the cleaning failed. Here's why: Document cleaning preserves all formatting (bold, italics, spacing, etc.) to keep your document looking identical. When you copy this formatted text, some harmless formatting characters (like special spaces or unicode formatting marks) come along. Our text detection tool, which is designed to be more aggressive, might flag these formatting characters as potential watermarks. The document itself is clean—these are just formatting artifacts from the copy-paste process, not actual AI watermarks. For best results, use the cleaned document directly rather than copy-pasting its content.

Zero-width characters are invisible Unicode characters that take up no visual space but exist in the text data. Some AI systems, including ChatGPT, insert these into generated text as a byproduct of how the content was produced. Common types include zero-width spaces (U+200B), zero-width joiners (U+200D), and zero-width non-joiners (U+200C). Our tool detects and removes these invisible markers.

Our tool is free, processes text locally in your browser for privacy, and works on text from any source, because it operates on characters rather than on the model. Unlike other tools, we never store your text, offer document cleaning for Word and Pages files, and give signed-in users a 1,500-character limit, unlimited with Premium.

Yes! Simply copy text from ChatGPT, Claude, Gemini, or any AI chat and paste it directly into our tool. Our invisible character detector highlights any hidden characters, and you can clean the text with one click. This clean paste workflow is designed to be fast and seamless.

Paste your text into our detector tool. We'll scan for dozens of invisible Unicode characters, including zero-width spaces, zero-width joiners and other zero-width and control characters. Detected watermarks are highlighted so you can see exactly where they are in your text.