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Clean before AI

Updated October 7, 2026

Overview / Description

Clean before AI is an AI privacy tool that masks personally identifiable information in your text before you send it to ChatGPT, Claude, Gemini, or other assistants, then restores the real values in the reply. You paste or upload a document, and it replaces names, IDs, and other identifiers with labels such as [PERSON_1] so the AI never sees the raw data; when the answer comes back, the labels are swapped back to the originals. All detection runs locally in your browser, with nothing uploaded, and it works as a Chrome extension directly inside the major chat tools. It recognizes IBANs, national IDs (including EMSO, SSN, JMBG, and OIB), email addresses, phone numbers, postal addresses, and company names across 17 languages, and handles PDFs, Word files, and scanned documents through OCR with a redacted-download option. A custom name list keeps masking consistent across a document. The vendor reports detection accuracy between 92.9% and 99.7% depending on language and document type, measured over 6,998 labeled items. For BestAIFor readers in legal, medical, HR, or finance roles, it is a practical way to use public AI assistants on confidential material without pasting client or patient data into them.

Used For

Masking PII (names, IDs, IBANs, emails, addresses) in documents before pasting them into ChatGPT, Claude, Gemini, or other AI assistants, then restoring it in the reply.

Pricing

Plan

Free

Free — both the web tool and Chrome extension require no account or payment

View pricing

Pros & Cons

Pros

  • Runs entirely in the browser with nothing uploaded, so raw data never leaves your device
  • Chrome extension masks PII directly inside ChatGPT, Claude, and Gemini
  • Detects IBANs, national IDs (EMSO, SSN, JMBG, OIB), emails, phones, addresses, and company names across 17 languages
  • Handles PDFs, Word files, and scans via OCR with a redacted-download option
  • Custom name list keeps masking consistent across a whole document

Cons

  • Detection accuracy varies by language and document type (92.9%-99.7%), so review is still needed on sensitive files
  • Delivered as a Chrome extension and web tool; no native Firefox or Safari build is mentioned
  • Browser-only processing means very large documents depend on local machine performance
  • Restoring masked values relies on the extension round-trip, adding a step to each prompt

Questions & Answers

Alternatives

Microsoft Presidio, Nightfall AI, Private AI

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