Kindle for PC is an application designed to emulate the e-reader on any personal computer or laptop. You do not need to own a Kindle device for this software to work. The program allows you to open any files that would normally work with the Kindle e-reader. It can even sync with an existing Kindle. You can buy new books or magazines through Amazon to use with the software. It includes features that allow you to access a dictionary, resize the fonts and add bookmarks to what you are reading. Kindle for PC also lacks a number of features. It does not have a built-in store interface for buying new books. That must be done through a browser. Additionally, it does not allow for highlighting or changing the contrast.