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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
ZM3 - Extension Details
Date Added: January 01, 1970
File Extension:  .ZM3
Description 1: .ZM3 is the extension linked to the ZSNES Movie #3 file. It refers to the third recording of a Super Nintendo (or SNES) game that is played with the help of the ZSNES emulator. The .ZM3 files allow for playback using the ZSNES application. ZM1 and ZM2 are extensions used for the first two movies, while .ZM3 is attached to files concerning the third recording. ZMV is the extension often seen on single ZSNES video files.
File Type:   Video file
Mode: Binary
Program(s) to Open:  Windows and Unix: ZSNES
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