TextColor changes the text color of the PDF document. Change the following 3 lines under the heading FixedPageUI: This should open the SumatraPDF-settings.txt file in your text editor. In Sumatra PDF, click on the Menu -> Settings -> Advanced Options It can be really jarring for the eyes and nerves. It’s as if you were relaxing in a room with the lights switched off and suddenly someone walked in and abruptly turned the lights on.Īs you are coding along you have to switch back and forth multiple times between your PDF reader and code editor. Immediately your eyes are shocked with bright luminescent white light. The default setting is black text on white background. This greatly reduces the strain on the eyes.īut let’s say you are also following along an e-book, maybe a PDF and you switch to Sumatra PDF. If you code for long periods of time, then it’s really great to have your code editor run in dark mode. It’s small in size, super-fast and doesn’t have any annoying cruft. Sumatra PDF Viewer installs politely but leaves a folder behind upon removal.A dark mode for Sumatra PDF is really easy – you just need to tinker with 3 lines of code in the settings. 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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