Help determining the file extension

A file extension is the last part of a file name, and is everything after the dot.

So if a file were called "report.doc" then the file extension is ".doc".

Sometimes the file extension is not visible and this may be the case if you are using the Windows operating system. If you cannot see the file extension then consult this FAQ article: What if you cannot see the file extension?

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You might find the following related FAQ articles of interest:

• What is a file extension?
• What if you cannot see the file extension?
• Help determining the file type.