Lossless Photo Squeezer is an app that helps decrease image size without loss in quality, thanks to its compression capabilities. It works with PNG, GIF, and JPEG image files. There are three compression modes: lossless, lossy, and PNG 8-bit. The amount of space you save varies with the mode you choose. This reduction in file size helps optimize all your pictures and save invaluable hard drive space. The decreased file size also means you’d be able to share your full-resolution pictures online much faster. The program can import a whole directory, which includes sub-directories, and output the pictures back without modifying the actual directory structure.