Briss is a cross-platform open-source Java application that does one thing and does it well: cropping PDFs. Usually, that’s exactly what you need to format cumbersome documents for a tablet or e-reader’s small screen.
Generating PDFs in plain Ruby can be a lot of work. Instead, consider generating PDFs from HTML using PDFKit.
"Set Passwords and Infomation to PDF" can set User/Owner passwords and Tilte/Subject/Keyword/Author/Creator information to PDF file. It contains the command line tool 'pdfauxinfo' and 'Add Auxiliary Info to PDF' Automator action, and therefore it's for Mac OS X. Automator action uses command line internally.
ShrinkIt is a simple, small, Panic-internal tool (for Mac OS X Snow Leopard) that will automate the process of stripping needless metadata from PDFs by re-saving them using Apple’s PDF processor. For app resources and icons that aren’t using high-end Illustrator features, this should be lossless — Apple’s PDF code is not compressing anything, just removing cruft. Simply drop a bunch of files (not folders) onto it — such as the contents of your app’s Resources folder — to have it find the PDFs and do its magic. The original files will be renamed with the prefix “_org_†for backup safety. That’s it!
