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The File Extension Library

What is a file extension?

Short answer: it's the set of letters after the period (.) in the name of a file.

Long answer: File extensions signify the file format of a file. It tells the operating system (OS) how data was stored in the file. Not all OS, require a file extension though. For instance, this is optional in Unix, but is mandatory with MS-DOS and Windows systems.

In most file formats the file type is actually defined by the contents (first bytes, file structure), but extensions are used to define the application that is used for opening the file.

Below is a detailed database of thousands of file extensions our team has compiled for you. Feel free to browse!


Browse all Extensions:
ABCDEFGHIJKLMNOPQRSTUVWXYZ
SCA - Extension Details
Date Added: January 01, 1970
File Extension:  .SCA
Description 1: .SCA is a file extension associated with a Norton Antivirus Scan File. It basically lets Norton Antivirus know which files to scan. This data file keeps a list of files that have already been scanned or require scanning by Norton Antivirus, on the computers hard drive. The .SCA file extension was first utilized with the Norton Antivirus program back in 2002.
File Type:   Data file
Mode: ASCII
Program(s) to Open:  Windows: Symantec Norton AntiVirus for Windows Macintosh: Symantec Norton AntiVirus for Macintosh
Common:
Extension: