This Recommendation | International Standard defines a set of lossless (bit-preserving) and lossy compression methods for coding bi-level, continuous-tone grey-scale, palletized color, or continuous-tone colour digital still images. This Recommendation | International Standard: — specifies decoding processes for converting compressed image data to reconstructed image data; — specifies a codestream syntax containing information for interpreting the compressed image data; — specifies a file format; — provides guidance on encoding processes for converting source image data to compressed image data; — provides guidance on how to implement these processes in practice.