The file is compressed using the ShrinkIt compression utility program which is used to reduce the size of files stored on an Apple II PC. SDK files that are related to ShrinkIt are a compressed file type formerly used with Apple II computers. This type of SDK file is older and was used to store musical loops, instrument sounds, and other components used with Roland electronic musical instruments. If the file extension SDK is associated with Roland S-550, the file is an audio file type that contains sound files in a twelve or 16-bit mono sound format. Smart Diary Suite is an application produced by Programming Sunrise which provides a way to organize and manage personal information. SDK files that are created with Smart Diary are a data file type that contains text, numerical data, graphs, and other elements used to organize personal information.

AutoSketch is a CAD application that allows you to create drawings and sketches for the architectural, manufacturing, and electrical engineering fields. If the file extension SDK is related to AutoSketch, the file is a CAD file type that contains two and three dimensional graphics, lines, shapes, mathematical calculations, analytic data, and other components which are used with Computer Aided Design. SDK files contain data and information related to the program that created the file. The programs and applications include AutoSketch, Smart Diary, Roland, and ShrinkIt. Files that contain the file extension SDK are associated with multiple programs and applications and various file types.

Shrinkit files