Full Feature list. See the manual for details.

• General features
  • Apply most operations to just selected page ranges of input files
  • Decrypt on-the-fly when an input file is encrypted
  • Use standard input and standard output to chain commands together
  • Keep or change PDF File IDs
  • Use a control file for parameters instead of the command line
  • Linearize for fast web view on any operation
  • Call from programs with full error handling
• Merging and splitting
  • Merge several PDF files into one, keeping bookmarks
  • Split a PDF file into several chunks of a give size, keeping relevant bookmarks
  • Split a PDF file at bookmark boundaries (chapter, section etc)
• Page operations
  • Scale pages (e.g from one paper size to another)
  • Shift the contents of a page (e.g to change the margins)
  • Rotate a page, in abcolute or relative terms
  • Flip a page horizontally or vertically
  • Crop pages, or remove cropping
  • Set a page's media box
• Encrypt and decrypt PDF files using 40 bit, 128 bit or AES security
• Compress and Decompress the streams in a PDF file
• Bookmarks
  • List the bookmarks in a file
  • Remove the bookmarks from a file
  • Add bookmarks to a file
• Make PDF-based presentations with transition effects
• Logos, watermarks and stamps
  • Stamp a page over or under the pages of a file
  • Combine the pages of two files by combining the individual pages
  • Add text, page numbers, or bates numbers to a page in different fonts, colors and sizes
• Multipage facilities
  • Put mutiple pages on one page (n-up)
  • Insert blank pages
• Annotations
  • List annotations
  • Copy annotations from one file to another
  • Remove annotations from a file
• Document information and metadata
  • List fonts
  • Read document info
  • Set title, author etc.
  • Set page layout, page mode and Acrobat display options
  • Read, delete and set metadata
• Add and remove file attachments, including other PDFs
• Miscellaneous
  • Thicken hairlines
  • Blacken text
  • Make draft documents (remove pictures)
  • Garbage collection of PDF files
  • Change PDF version number
  • Copy unique IDs from one file to another