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A .diz file is a plain text file that describes the contents of a ZIP (.zip) archive. Typically, these files have the filename FILE_ID.diz. They're often included in ZIP files distributed over the Internet, to provide an overview of those archives' contents.

You likely won't need to convert a DIZ file to another format, but you may want to change its extension to .txt. This will let you more easily open the file with text editors, such as Microsoft Notepad and Apple TextEdit.

NOTE: DIZ stands for Description in Zip.

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