#pdf

Posts on X2Q tagged pdf. Updated as new posts are published.

• Apr 22, 2026

  pdfcrack — recover lost PDF passwords on Linux and macOS (2026)

  pdfcrack is a small, single-threaded CPU tool for recovering lost PDF user and owner passwords. Fine for 40-bit RC4 and small dictionary attacks; for 128/256-bit AES PDFs, migrate to pdf2john + hashcat on a GPU.

• Jan 30, 2013

  Print to PDF on Linux — set up a system-wide PDF printer with cups-pdf (2026)

  cups-pdf gives you a virtual printer that writes a PDF instead of printing to paper — available system-wide to every application, from the command line, and over the network from a headless box. Install it, restart CUPS, and your PDFs land in ~/PDF.