Its real appeal can be attributed to the lightweight setup as the app can load documents pretty fast, even faster than Adobe Reader. Unlike the name implies, it can handle a lot more than just PDFs including several eBook and comic formats. Genius PDF is a comprehensive and free eReader application for Windows.

The real allure of the app, is that it’s extremely lightweight and responsive. Genius PDF, despite the name, is a universal reader application that can handle a whole bunch of file formats.

A lot of the aforementioned readers will handle other file types, but some of them leave a little something to be desired. Some of the big leagues include Calibre, Reader (Sony), Adobe Digital Editions, and Firefox epubReader. Sumatra PDF Viewer installs politely but leaves a folder behind upon removal.There are a whole ton of PDF, comic and eBook readers for Windows. Overall, we think that Sumatra PDF Viewer is a great alternative to larger PDF programs, and anyone looking for a sleek and simple PDF viewer should give it a try. Sumatra PDF Viewer is small enough to fit on a USB drive, ensuring that you can view PDFs easily wherever you go.

An online Help file provides a list of keyboard shortcuts that make the program's operation even easier. A search box lets you locate text within PDFs, and there's even an option that will launch your default e-mail application and let you automatically attach the PDF to a new e-mail. The program also lets you rotate pages and view PDFs in full screen or presentation modes. The basic PDF viewer options are here: you can zoom in and out and select single page, facing page, or book views. The program has a plain, intuitive interface, with a few menus and a toolbar across the top. If you're frustrated by the clunkiness of some of the big-name PDF viewers, this could be exactly what you've been looking for. It has all the basics you need and none of the fluff that you don't. Sumatra PDF Viewer is a lightweight free Windows program lets you view PDF documents without a lot of extra features that slow things down.

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