DokMine finds emails, phone numbers, URLs, IDs and names across PDFs, Office files, emails and images — then hands the file back redacted, in its original format. A redacted .docx is still a .docx. It runs OCR on scans and on screenshots embedded inside documents, so text hidden in images gets caught too. Extraction mode lets you just see what a document exposes. Free tier, no card required. Automated detection isn't exhaustive, so always review a file before sharing it.