core + attic (Attic Area): these terms have been either deprecated from the core or extentions, or removed from pending as not accepted into the full vocabulary.

fileSize

Canonical URL: http://schema.org/fileSize

Thing > Property > fileSize

Size of the application / package (e.g. 18MB). In the absence of a unit (MB, KB etc.), KB will be assumed.

Usage: Between 1000 and 10,000 domains
Values expected to be one of these types
Text
Used on these types
SoftwareApplication

Schema Version 3.3