About Claude Watermark Remover
What this site is
Claude Watermark Remover is an independent, free tool that finds and cleans the invisible characters that creep into text: zero-width spaces, joiners, odd spaces, control characters and, optionally, em dashes. It exists because the topic of AI watermarks is full of confident claims that do not hold up, and people deserve a tool that is precise about what it can and cannot do.
Principles
- Honest about limits. Anthropic says Claude's text watermark lives in word choice, not in hidden characters. Every tool page here says so, and none of them claims to remove that watermark.
- Private by design. Your text is processed in your browser. It is not uploaded or stored.
- Careful with real writing. Safe mode protects the characters that Persian, Urdu, Hindi and emoji text depend on, and tells you what it kept.
- Sourced. Statements about Claude's watermark come from Anthropic's own documentation, linked below.
Check the privacy claim yourself
- Open your browser's developer tools and go to the Network tab.
- Paste text into any tool on this site and click Clean Text or Scan.
- You will see no request carrying your text. At launch the site loads no third-party scripts, ads or analytics.
How it is built
The site is plain HTML and CSS with one small JavaScript file per feature, and no frameworks. The cleaner walks your text one Unicode code point at a time, looks each one up in a table of invisible and unusual characters, and then decides whether to keep, remove or normalise it. Safe mode adds context rules, such as checking the neighbouring letters before keeping a joiner.
Sources
- Anthropic: Claude text watermark
- Anthropic: How Claude marks AI-generated content
- Anthropic: Claude file checker
- BleepingComputer: AI watermark removers flood the web
We update pages when Anthropic changes its documentation. If you spot something out of date, please tell us.
Who runs it
Claude Watermark Remover is run by an independent website owner. You can reach us through the contact page or at contact@claudewatermark.site.
Independence
This site is not affiliated with, sponsored by or endorsed by Anthropic or any other AI provider. Claude is a trademark of Anthropic, PBC.
Changelog
- October 20, 2026: Initial release with the Claude Watermark Remover, the Invisible Character Remover, the Zero-Width Space Remover and the Em Dash Remover, including context-aware Safe mode.