AI Text Cleaner
The AI Text Cleaner is a free browser tool for cleaning text copied from chat apps, PDFs, websites, emails, and rich-text editors. It uses fixed formatting rules and does not rewrite your words with an AI model.
Provider-specific versions use the same private cleaner with guidance for the source you copied from:
Why AI marking matters now
The EU AI Act's transparency requirements became applicable on August 2, 2026. Its Code of Practice on marking and labelling AI-generated content covers machine-readable marking and detection for generated text, images, audio, and video where technically feasible.
Providers do not all mark content in the same way. Google uses model-level SynthID for text generated in the Gemini app and web experience. Anthropic's Claude guidance describes model-level marks for supported text and signed provenance metadata for supported files. OpenAI's current public rollout covers generated images and supported audio, not ordinary ChatGPT text.
These developments make careful text handling more important, but formatting cleanup is not provenance verification. The cleaner cannot detect authorship, inspect file metadata, or promise to remove model-level watermarks.
What it cleans
The recommended rules cover the most common artifacts:
- Zero-width spaces, word joiners, byte order marks, soft hyphens, and other hidden separators
- Nonprinting control codes while preserving tabs and normal line breaks
- Nonbreaking and unusual Unicode spaces
- Curly quotation marks, em and en dashes, and single-character ellipses
- Spaces and tabs at the ends of lines
- Canonically equivalent Unicode character sequences
Optional formatting rules can collapse extra blank lines or remove Markdown heading markers, emphasis markers, and code fences while keeping the visible content.
Advanced cleanup
The advanced rules are off by default because they can change meaning or presentation:
- Remove joiner and direction controls can alter emoji sequences and multilingual text
- Flatten Unicode variants converts full-width letters, ligatures, circled numbers, and styled forms
- Replace lookalike letters maps selected Cyrillic and Greek characters to Latin and should only be used for English text
Always review the cleaned version before copying it.
Privacy
Cleaning happens in the browser. The page does not submit or store the text, and marketing trackers are disabled on the cleaner page. It also clears the text before the page is saved in the app's navigation cache. Only the selected rule preferences are kept in local browser storage.
What it does not do
The cleaner is not an AI detector, authorship verifier, or rewriting tool. It cannot guarantee detector results or reliably remove model-level watermarks. It works on pasted text only, so it does not inspect signed provenance metadata or other metadata attached to documents, images, or files.
Use the tool to fix formatting, not to conceal authorship or bypass disclosure requirements.