Cabinet (file format)

This article possibly contains original research. Please improve it by verifying the claims made and adding inline citations. Statements consisting only of original research should be removed. (October 2020) (Learn how and when to remove this message)

Cabinet

Filename extension	.cab
Internet media type	application/vnd.ms-cab-compressed
Uniform Type Identifier (UTI)	public.archive.cab
UTI conformation	public.data public.archive
Magic number	MSCF
Developed by	Microsoft
Type of format	Archive file format

Cabinet (or CAB) is an archive-file format for Microsoft Windows that supports lossless data compression and embedded digital certificates used for maintaining archive integrity. Cabinet files have .cab filename extensions and are recognized by their first four bytes (also called their magic number) MSCF. Cabinet files were known originally as Diamond files.