What Is This Website?
ClaudeWatermarks is a browser-based text-artifact inspector and cleaner for text copied from Claude, other AI assistants, documents, or web pages that develops unexpected formatting. It lists directly observable zero-width characters, bidirectional controls, Unicode Tag characters, and clipboard formatting residue so users can review the position, context, and proposed change before deciding whether to remove it. It does not treat those artifacts as proof of authorship or claim to detect unpublished model-level watermarks.
Core Features
- Checks zero-width characters, bidirectional controls, Unicode Tag characters, and selected control characters, showing their code points and positions.
- Analyzes HTML and formatting residue in rich-text clipboard content without rendering that HTML as a page.
- Provides surrounding context and a change preview for each finding, letting users retain or clean individual items.
- Processes pasted text locally in the browser; the site states that text is not uploaded to a server.
- Includes a separate file checker that reads available signed C2PA Content Credentials and validation status in supported files.
Common Use Cases
- Editors check invisible characters and unexpected formatting before moving AI output into a publishing system.
- Developers trace Unicode characters that cause unusual diffs in prompts, documents, or code snippets.
- Reviewers document observable text artifacts without using them to infer authorship.
- Users inspect formatting residue carried from a web page or office document before pasting rich text into another tool.
Who It Suits
- Writers and editors who regularly copy text among Claude, ChatGPT, Gemini, documents, and web pages.
- Developers who need to locate specific code points and handle text characters carefully.
- Education, review, or compliance teams that value an explainable inspection process.
- People who need to check C2PA Content Credentials in supported files.
- It is not suited to users who need proof that text came from a particular model or need an unpublished model-level mark removed.
Comparison With Similar Tools
When choosing this type of tool, it helps to distinguish artifacts visible in a string from statistical marks created by a model's word choices. ClaudeWatermarks focuses on the first category: its findings identify specific characters, positions, and context, and users decide item by item. The site explicitly does not draw conclusions about unpublished model-level marks or text authorship. File provenance credentials are handled separately through its C2PA checking flow rather than mixed with text inspection.
FAQ
Q: What does ClaudeWatermarks check?
A: It checks directly observable zero-width characters, bidirectional controls, Unicode Tag characters, selected control characters, and clipboard formatting artifacts, with code points, positions, and context.
Q: Can I review changes before text is cleaned?
A: Yes. The tool presents each finding and a change preview; only items selected by the user are cleaned.
Q: Can it prove whether text was generated by Claude or another AI?
A: No. The site distinguishes character and formatting artifacts from authorship and unpublished model-level marks.
