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I built a redaction process for a small company once. My critical security step was rendering out the PDF as individual flat image files, then re-assembling it

I built a redaction process for a small company once. My critical security step was rendering out the PDF as individual flat image files, then re-assembling it like a traditionally photo-copied document. That way the loss-full operation is enforced, at the cost of forcing end users to OCR unsearchable image-scan (like) PDFs.

hyper_dynamics 5y ago
It's the only way to be sure!
- raxxorrax 5y ago
  You could replace the censored text with gibberish before blacking it out. Or some secret message for QAnons to find.
- pvillano 5y ago
  well if you had an open (.odf) or openable (.doc≈xml) format you could replace strings and be sure something was gone