Changing the scale of the size of an image is absolutely easy to accomplish in GIMP.
To keep it consistent with the online manual we did not change the index or page numbering. Chapter 1-15 are included in the first volume. Chapter 16 to 18 are included in this volume. It contains only the first half of it due to physical book size restrictions. This reference manual is based on the online manual. The GIMP is also available for other operating systems such as Microsoft Windows or Apple's Mac OS X (Darwin). Most GNU/Linux distributions include The GIMP as a standard application. One of The GIMP's strengths is its free availability from many sources for many operating systems. The advanced scripting interface allows everything from the simplest task to the most complex image manipulation procedures to be easily scripted. It is designed to be augmented with plug-ins and extensions to do just about anything.
It can be used as a simple paint program, an expert quality photo retouching program, an online batch processing system, a mass production image renderer, an image format converter, etc. The GIMP is suitable for a variety of image manipulation tasks, including photo retouching, image composition, and image construction. GIMP is an acronym for GNU Image Manipulation Program. GIMP is a multi-platform photo manipulation tool.