Image Tuner is a simple and free program that will help you rename many images at once to get rid of standard naming patterns, resize them for uploading to social networks, phones and forums, convert them for compatibility with certain programs and make other fairly basic modifications.
Features: Resize, rename, watermark, convert and adjust images in batch mode * Resize by percent, preset (iPad, iPhone, Facebook etc.) or custom size * Flip, rotate, sharp, colorize, round * Auto search for digital pictures within any folder and subfolders * Preview, import and export image list * Supports common formats (JPEG, BMP, PNG, GIF, TIFF, PCX etc.) * Supports camera RAW (CRW, CR2, RAW, NEF, DCR, X3F, ORF etc.) * Variable options and settings for advanced users * Configurable compression / resolution ratio