A File Extension is a short group of letters, occurring after the period in a file name, which indicates the format, function, and identity of a given file of information. Learning a little about file extensions can help you with organizing and finding files, and knowing what's in a file when you see the extension. 

For the text version article, visit this link:

https://www.bobology.com/public/What-is-a-File-Extension.cfm

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