NightPDF

NightPDF is a tool meant for handling PDF files. It is a well-built program because it has plenty of useful capabilities alongside a simplistic form — it is semi-portable (you don’t need to install it on your operating system; double-click the executable and you are up and running), it is not performance-draining (mild CPU and RAM usage), and it has an intuitive design with easy-to-follow commands.

The app is super effective for those who value high work performance. It maps all your document’s titles, subtitles, or chapters in the sidebar, situated on the left. You can easily click on any of those to access that part of the document. You can just input the number of the page you are interested in and get there faster.

When it comes to navigation, it is equally simple to do it: from the screen, with specialized arrows, using keyboard shortcuts (you can go to the next/previous page with the right/left keys or move up/down in the document, in zoomed-in mode, with the correspondent keys). Also, the 'go-to first/last page' functionality can be helpful, alongside other standard well-known shortcuts.

The program offers a variety of options for manipulating and visualizing your documents in a specific manner: you can zoom in/out, return to the file’s original size, change its position, and even customize your preferred way of scrolling and displaying pages — you have normal scrolling, horizontally disposed files with bottom scrolling, or wrapper scrolling (where pages can be arranged by an odd or even number of spreads).

The night mode is super effective as it allows for color adjusting so you can look at your document/book for hours without growing tired of it. Besides pre-defined chromatic choices like Default (the document’s original display), Sepia, and Redeye, you can access the custom menu to adjust your file in the most convenient way.

Summarizing, NightPDF is a program that will solve a lot of real-life problems and annoying issues. It is packed with all the basic requirements for a reader and has some extra nice features that make it awesome. It offers mobility, it is free and performance-friendly. The night mode color setup, page arrangement, and the toggle sidebar help those who must dive into full focus mode, immerse in their work, and avoid distractions.