File Extension
alphabetical list of extensions

Welcome to FileExtension.org

How can FileExtension.org be helpful for you?

If you have a problem with opening a file with unknown extension, it is likely that at this website you will find a solution to your problem.

What is a file extension?

The file extension (or simply "extension") is a way to show the user and the computer, the type of file they have to deal with and what information has been encoded in it. On the basis of the extension, we can choose an appropriate software to support a given file format.

An extension is the ending of the file name (usually consisting of 3 or 4 letters) located in the file name after the last dot. For example - the extension of a file named myfile.txt is .TXT - which means that we are dealing with a text file.

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6.888
file extensions
Count of extensions
Count of software
7.228
software to support them