Start by pasting the passage you want to edit. It can be an article, email, report, Markdown document, technical note, Claude Code output, JSON example, or a draft that Claude helped you revise. The character and word counters update in your browser, and the original remains available while you work. You do not need an account, and you do not need to run a detector before using the rewriting controls.
Next, choose Light, Balanced, or Strong. Light makes restrained wording improvements. Balanced, the default, restructures sentences and some paragraphs while keeping the complete meaning. Strong changes the expression and organization much more substantially. Tone, target length, and preservation settings let you describe the edit without asking the model to invent facts. Citations, URLs, numbers, dates, code, and JSON can be kept explicit in the rewrite instructions.
Selecting Rewrite Text sends the passage and your settings to the configured non-Claude editing provider. Substantial rewriting changes the visible token sequence, phrasing, sentence structure, paragraph flow, and statistical properties of the passage. Anthropic states that heavy editing or paraphrasing may make a mark undetectable, but no public third-party mechanism currently exists to verify whether a particular rewrite removed the model-level mark. The result is therefore presented as a rewritten draft, not as proof of removal.
Review the output beside the source or through the unified diff before using it. Strong edits deserve especially careful checking because large structural changes can affect nuance even when the instructions require factual preservation. Confirm names, figures, dates, quotations, links, citations, commands, and technical constraints yourself. Copy the approved result, download it as plain text or Markdown, regenerate it with the same settings, or restore the original and try a different approach.