Windows only: Hailing from the camp of "do one thing exceedingly well"," Batch Image Resizer is a small utility for speedily batch processing your image files. Bulk Image Resizer supports popular image formats like JPG, PNG, BMP, and GIF among others without any limitation on file size. The documentation for the program describes the resizing method as a "high quality distortion-less image resizing." While "high quality" isn't exactly a scientific measure, during testing, our resizing results were comparable to other resizing applications, and reasonable upscaling had good results. If you have a multi-core processor, the application is optimised to use it for speedier processing. One small but handy feature is the ability to pull source images from multiple directories at once, rather than demanding a folder-by-folder run. Batch Image Resizer is freeware, Windows only.