If you’ve never used Gimp—a free image editor available for GNU/Linux, OS X, Windows and other operating systems—you might be quite surprised by its capabilities
I use it for everything from Facebook posts when the available backgrounds don’t work well for what I want to say to political buttons that I design and press out using a button-making machine.
Gimp can do everything from resizing and cropping images to adding text, changing colors or distorting images in artistic ways. You can use it to draw with its pencil or paintbrush and layer additional images. It’s quite a versatile tool. Yet I only recently noticed that it can also be used to manipulate PDF files, not just the many types of image files that most people use it to create, modify or enhance.
Source:: Network World – Data Center