With the free ImageMagick software you can create, edit, compose or convert bitmap images.

Use the ImageMagick application to easily resize, flip, replace, rotate, distort, crop, transform, adjust colors, apply various special effects, or draw text, lines, polygons, ellipses, and Bézier curves on an image.
ImageMagick as mentioned above is freeware provided as a binary ready to run on your system, or as a source code that you can use, copy, modify, and distribute in both open source and proprietary applications.
Distributed under the Apache 2.0 license.
ImageMagick uses multiple computing subsets to increase performance and can read, edit or write mega-, giga- or tera-pixel image sizes.
The current version of ImageMagick is 7.1.2-19. The app runs on Linux, Windows, Mac OS X, iOS, Android OS and more.
Download the binary you are interested in
Although the press releases will range from very select to rare, I said I'd pass...because sometimes the editors hide.

