.ICAP File Extension
File TypeInCopy Package File
What is an ICAP file?
Package file used by InCopy, a writing and editing program used with Adobe InDesign; stores an .ICMA file and associated .ICML files in a compressed archive; used to package subsections of InDesign documents for remote editing.
NOTE: ICAP files are used by InCopy and InDesign CS4 and later. Previous versions used the .INCP extension.