I am using Sumatra PDF on Windows 8.1 64-bit. Just want to say thank you for this software. I am using it to read a chemistry textbook. It is super fast. I am able to print pages and other PDFs from the software. This is everything that I was looking for, very small footprint, fast download on my dial-up modem, and a software with fast functionality.
I downloaded many free PDF readers, most of which wouldn't scroll through pages, or just stated they would not work on my computer and therefore wouldn't open, despite carefully choosing the correct download for my computer. I noted the huge download amounts, and then the small footprint for Sumatra.
I couldn't be more pleased. Thank you for helping this struggling student.