XnView - a program for viewing and converting graphic files. Excellent graphics viewer, intuitive interface and high speed operation, supports more than 500 image formats, can convert 50 formats between themselves. XnView may perform such operations on graphics as cropping, resizing, gamma, brightness, contrast, balance, printing, allows the use of various filters to the image, and performs with the files much more, all of these operations and filters (in any combination) can be apply directly to a large number of files, and screwing - save as scripts and use later.