Open-source command-line PDF tool for splitting, merging, encrypting, decrypting and repairing PDFs.
qpdf is an open-source command-line PDF structure processing tool for splitting, merging, linearising, encrypting, decrypting, repairing and inspecting the internal structure of PDFs. It suits automated PDF processing, batch scripts and developer workflows.
Use cases: PDF splitting, PDF merging, PDF encryption, PDF repair, command-line batch processing
Note: qpdf is a command-line tool; general users can start with PDF Arranger, PDF24 or Stirling PDF.
