Files with the .SKETCH extension contain vector graphics saved by the dedicated graphic software of the Mac OS X system – Sketch.

They can encompass several layers that contain elements such as images, shapes, and text. SKETCH files are unique to the Sketch program, which is available only on Apple’s operating system – as such, when the graphic project is finished, it can be exported to a different format that can be viewed by software for other operating systems, as well as moved to the Sketch cloud storage service.