Claude Mark Remover is a browser-based tool that strips hidden watermarks from text generated by Anthropic's Claude models. It targets both the mechanical layer of invisible characters and the statistical patterns in word choice that AI detectors look for. Writers and developers use this to ensure their content does not carry hidden metadata or predictable linguistic signals that might trigger automated filters.
The tool runs locally in your browser. This means your drafts are not sent to a server or stored anywhere, which is important for privacy. It handles both raw text and files like PDFs or images that might contain C2PA metadata.
Features
- Unicode character stripping to remove non-printing spaces and hidden marks
- Sentence rewriting to break statistical patterns in wording choices
- Metadata removal for file types like PNG, JPG, and PDF up to 20 MB
- Browser-based processing so no data leaves your local machine
- Support for Claude 3.5 and later models released after August 2026
- C2PA content credential removal to scrub document history
- Zero length limits on text input for long-form articles
How to Use
- Paste your Claude-generated text into the main input field on the site.
- Click the button to strip invisible Unicode characters from the text.
- Use the rewrite function to change sentence structures and word patterns.
- Check the human score to see how much the wording has changed.
- Drop images or documents into the file area to scrub their metadata.
- Copy the cleaned text or download the processed file to your computer.
Use Cases
- Clean up a blog post draft so it does not contain hidden no-break spaces.
- Remove C2PA metadata from a PDF report before sending it to a client.
- Rewrite a technical summary to bypass statistical AI detection patterns.
- Strip EXIF and XMP data from images generated using Claude-based tools.
Pricing
Check the official website for current pricing. The tool is currently listed as free to use without an account.
FAQ
What is Claude Mark Remover?
It is a tool that removes invisible watermarks and rewrites text to break AI detection patterns.
Is Claude Mark Remover free?
Yes, the tool is free to use with no account required and no word limits.
Does it store my data?
No, everything runs in your browser, so your text never reaches a server.
Does it work on Claude 3.5?
Claude 3.5 does not have native watermarking, but the tool works on newer models that do.
What files can it clean?
It supports common formats like PDF, DOCX, PNG, and JPG up to 20 MB.
How does it remove the mark?
It strips invisible Unicode characters and then rebuilds sentences to change the statistical pattern of the wording.
