[1] Version 12.x of the software was approved for use by the US Department of Veterans Affairs, with AES encryption listed as a benefit, subject to some decision constraints such as keeping up-to-date, and banning the use of FTP, unapproved by the VA.[2] The Bullzip PDF Printer works by creating a virtual printer in the operating systems that prints to PDF files instead of paper.
[1] It stated that PDF files created were not searchable, tended to be larger than produced by other programs, and that conversion was rather slow.
[3] It is not limited to PDF, also producing BMP, JPEG, PCX, PNG, and TIFF files.
An unusual feature is the ability to append content to an existing PDF file.
[6] Bullzip also publish free software "PDF Studio" which can view PDFs and merge, search, print, split, delete, and move pages.