Disk footprint
Disk footprint (or storage footprint) of a software application refers to its sizing information, when it is in an inactive state, that is, not executing but stored on a secondary media or downloaded over a network connection. It gives a sense of the size of an application, typically expressed in units of computer bytes (kilobytes, megabytes, etc.) that would be required to store the same, on a media device or transmitted over network. Due to organization of modern software applications, disk footprint may not be the best indicator of its actual execution time memory requirements - a tiny application that has huge memory requirements or loads a large number dynamically linked libraries, may not have comparable disk footprint vis-a-vis its runtime footprint.