Import files, choose detection categories and redaction mode, review hits, preview the result and only then send a redacted copy to AI.
LocalMask Guides
Configure spreadsheet-specific rules for cell content or whole columns, review results, search selected columns, then export and spot-check.
Import the PDF, choose categories, review hits, search original terms, preview the result and verify the exported copy.
If a file contains customer, employee, contract, finance, legal or medical data, local offline redaction is usually the safer workflow.