RETTUT puts a privacy checkpoint between documents and AI

Field notes

The tool processes source documents in the browser, replacing detected values with consistent labels before a protected copy is downloaded for AI use. A local mapping can restore the original values later on the user’s device. Its synthetic purchase-contract example reports 31 findings in 15 categories, including bank accounts, birth numbers, court references, and data-box identifiers. The page also notes that control-sum checks validate identifier structure rather than guaranteeing complete detection.