AI anonymizer

Use AI without handing over your data

Paste a message, an email or a document before sending it to an AI assistant: every name, email address, phone number and other personal detail is replaced with a placeholder like [PERSON_1] or [EMAIL_1]. Send the anonymized version, then paste the AI's answer back to restore the real values, with its formatting kept.

How it works

Detection runs entirely with pattern matching, not with an AI model: there is no risk of your text being sent anywhere just to find what to hide. Each distinct value gets its own numbered placeholder, reused everywhere it appears, so the AI's reply can be matched back to the right value, even if it rewrites the placeholder's case or spacing slightly.

What's detected

Email addresses, links, IBANs and card numbers, social security numbers, phone numbers, postal addresses, dates of birth written after a phrase like "born on", and names introduced by a civility, a greeting or a signature line. Add your own words for a company, a project or anything else the automatic detection misses, and choose exactly what stays hidden before you copy the text.

Nothing leaves your browser

The anonymization, the detection and the restoration all run on your device. Nothing is uploaded, and the correspondence table between placeholders and real values only exists in this tab: close it or reload the page, and it's gone for good.