Tried the lite version which worked for my requirements (limited to 2 page PDFs) so I upgraded to the full version. Although at $20 it seems a little pricey, it works just fine. Upgrade could have been smoother, rather than activating the lite program the upgrade just added the full version leaving both applications. Once I deleted the lite version, the OS X PDF printer I added switched over to the full version (see below about adding the printer), but I removed and re-installed it anyway to change the naming convention.
When first running the program, add a printer from the OSX printer utilities, the system found the new printer right away and added it with no problem. The printer will remain in your list and be available “green” when the program is running / red when you aren’t running the app. You can also start/stop the PDF server from the app options.
Like others, I use it to generate a PDF from a program which bypasses OS X’s built in routine and ability to generate PDF files. In my case it was a windows program running under a windows virtual machine. The windows routine recognized the PDF printer and executed it with no problem. Unlike other PDF printers, rather than popping up a dialogue box to name/save the file, this just generates a name and stores it in a library sub-folder. Then pops up a preview which you can save, alternatively the printed files are listed in the PDF Printer located on the menu bar. A right-click allows you to open the file or show in finder which takes you right to the folder which is buried several layers deep.
The files generated are exact, appropriately sized PDF files, and specifically not captured images as a scanned PDF creates. In my case a 2 page text with formatting (including lines/boxes) document produced a fully selectable/searchable PDF file about 26K in size. Documents with embedded images also worked fine. Printing from within the normal OS X print interface worked fine with additional options to scale output/etc. However I’m not sure why you would use this rather than the already available built-in OS X PDF generator.
Options are limited, like stated elsewhere there are no internal options for resizing pages, options are limited to the print interface of the program your using. In my case 8 1/2 x 11 worked just fine.
4 stars only due to cost, upgrade, and limited options. Running OS X Sierra.