pdfcpu is a PDF processor for the command line. It validates and optimizes PDF files, merges and splits them, rotates, resizes and rearranges pages, adds stamps and watermarks, encrypts and decrypts, fills forms, extracts images, fonts and content, manages attachments, bookmarks and keywords, and validates digital signatures.

Examples

pdfcpu validate report.pdf
pdfcpu optimize report.pdf smaller.pdf
pdfcpu merge all.pdf part1.pdf part2.pdf
mkdir pages && pdfcpu split book.pdf pages
pdfcpu encrypt --upw user --opw owner report.pdf locked.pdf
pdfcpu watermark add "DRAFT" "diag:1, op:.25" report.pdf draft.pdf

File access

pdfcpu can process files in your home directory. To also use USB drives and other removable media (/media, /mnt), run:

sudo snap connect pdfcpu:removable-media

The configuration, installed fonts and trusted certificates are stored in ~/snap/pdfcpu/current/.config/pdfcpu.