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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
ZID - Extension Details
Date Added: January 01, 1970
File Extension:  .ZID
Description 1: The .ZID extension is linked with Zoo/PhytoImage data. ZID files represent key files in Zoo/PhytoImage that contain everything a user needs for automatic and manual identification of various particles, as well as for calculation of the summary statistics. Examples of such calculations include abundances, size, biomasses, spectra, and so on.
File Type:   Data file
Mode: ASCII
Program(s) to Open:  Associated application: Zoo/PhytoImage
Common:
Extension: