For users who prefer free and open-source solutions, there are several tools available that can efficiently merge PDF files without the need for commercial software. One of the simplest command-line ...

There are a number of ways to extract a range of pages from a PDF file: there are PDF related toolkits for doing it, or you can use Ghostscript directly. For example, to extract pages 22-36 from a 100 ...

Resourceful inventors have proven time and again that the game “Doom” can run on anything – perhaps apart from a slice of salami, but who knows what else is coming –. Now, however, one of them has put ...

Linux has quite a few PDF readers available, but Okular stands out as the best of the bunch, due to its ability to comment on, highlight, and otherwise annotate PDFs.