Claude Watermark Remover - Clean Invisible Text Markers Online

Use a Claude watermark remover to inspect and clean invisible Unicode markers in AI-generated text, including Claude Code text, locally in your browser. No text is uploaded.

Text watermark cleanup

Text not uploaded

Text to inspectTEXT

Cleaned textTEXT

Cleanup optionsNormalize exotic spacesRemove direction controls (may affect RTL text)Replace selected Latin lookalikes

A browser-local Claude watermark cleaner

This first version handles the deterministic part of the problem: invisible Unicode and format characters that can travel with copied text.

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Private by defaultThe text is processed in your browser and is not sent to our server.

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Conservative cleanupEmoji sequences, CJK characters, and language joiners are protected by default.

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Readable reportSee code points, categories, actions, counts, and sample positions.

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Multi-language readyThe interface supports English, Simplified Chinese, Traditional Chinese, and Japanese.

How to use the Claude watermark remover

Paste text

Paste the text you own or have permission to process into the input box.

Review options

Keep the safe defaults unless you understand the effect of removing direction controls or lookalike characters.

Clean locally

Run Layer A to inspect the text and remove high-confidence invisible carriers in your browser.

Review and export

Check the report, review the visible result, then copy or download the cleaned text.

How does this text watermark cleaner work?

The tool iterates through Unicode code points and classifies zero-width characters, tags, format controls, bidirectional marks, exotic spaces, and selected lookalikes. It preserves context-sensitive characters such as emoji joiners and script orthography when they may affect rendering or meaning.

Important limits

This Layer A cleaner cannot decode an undisclosed statistical token-sampling watermark. A rewrite by another model may disrupt such a signal, but it can change meaning and cannot be verified against a vendor detector here. The tool is independent of Anthropic and does not prove human authorship.

Claude Code watermark remover FAQ

Does this remove every Claude watermark?

No. It deterministically cleans invisible Unicode and format characters. A statistical watermark embedded during token selection cannot be confirmed or guaranteed removed without the vendor detector and verification method.

Is my text uploaded?

No. The first version performs inspection and cleanup in the browser. The default action does not call an application server or an external AI model.

Why were some special characters preserved?

Some invisible characters are meaningful in emoji, Arabic, Indic scripts, mixed-direction text, and CJK typography. The safe mode preserves them to avoid damaging the text.

Can a clean result prove that a person wrote the text?

No. A clean result only means that this deterministic Layer A scan found no removable markers. It is not proof of authorship or provenance.

Implementation reference

The layered design is informed by the open-source watermarks-remover project. Its documentation also separates deterministic Unicode cleanup from best-effort statistical rewriting.

View the reference project on GitHub ↗