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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:
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GAL - Extension Details
Date Added: August 02, 2009
File Extension:  .GAL
Description 1: .GAL file extension is linked with GenePix Array List. This is the file extension of the array list utilized by GenePix. The array list file identifies the size and position of blocks, layout featureindicators, and the identifiers and names of the printed substances that are associated with every featureindicator. GenePix Pro from Molecular Devices is a comprehensive standalone image analysis program for microarrays, cell arrays and tissue arrays. It is the industrystandard microarray image analysis program due to its unique combination of visualizations, imaging and analysis tools, performance and ease of use, and automation capabilities.
File Type:   Data File
Mode: ASCII
Program(s) to Open:  Windows: GenePix Pro
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