TIFF 

TIFF files (Tagged-Image File Format) are flexible bitmap image files supported by virtually all paint, image editing, and page-layout applications. Virtually all desktop scanners can create TIFF images. This format, which uses the .tif extension, supports CMYK, RGB, Lab, and grayscale files with alpha channels and Bitmap files without alpha channels. TIFF also supports LZW compression, a lossless compression format.