Summarize. Translate. Extract, compare, transcribe. AI tears through document chores that used to swallow entire afternoons, and the urge to hand it everything quickly becomes hard to resist. The trouble is that your files are packed with names, addresses, numbers, sometimes genuine secrets. This guide gathers every use case and, for each one, the exact method to enjoy AI without ever exposing a single piece of identifying data.
One reflex for every use
The move is always the same. Pseudonymize the document before you send it, meaning you replace each identifying detail with a stable, reversible pseudonym, then work calmly on the masked version, the one the AI sees in your place without ever meeting a real name. The result comes back. You re-identify locally, on your own machine. The task changes. The reflex does not.
All the use cases
Eleven concrete situations, and each one has its own page. Pick the one that matches your need right now, then follow the method step by step, from dropping the file to the final re-identification. Slack, Word, Excel, contracts, emails: it all goes through.
All the articles in this guide
- Anonymize a chat (Slack, Teams) before AIParticipants and named clients masked, the summary stays usable.
- Anonymize a PowerPoint before AIClient names, figures, speaker notes: mask it all before the AI.
- Anonymize a Word document before AIWord hides data in comments, tracked changes and metadata.
- Meeting transcripts and AI: anonymize before summarizingParticipants and named clients masked, the summary stays usable.
- Compare two contracts with AI without leaksConsistent tokens: same party, same token, comparison works.
- Extract data from a document with AI without leaksFields as tokens, useful values kept: the structure without the identity.
- Summarize a confidential document with AIAnonymize, summarize, re-identify: the summary keeps the tokens.
- Translate a confidential document with AI without leaksAnonymize, translate, re-identify: tokens pass through translation.
- Anonymize an email before pasting it into ChatGPTSender, client, références: what to mask, and how.
- Anonymize multiple files at once before AIDrop a batch, consistent tokens across files, without exposing the data.
- Anonymize an Excel export before AINames, emails, IBAN: mask the right columns, keep the figures.