View DIZ Files Online
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.
About File Helper
File Helper is a free web-based file utility that can open Description in Zip files and over 150 other file formats directly in your web browser. It displays file properties, including metadata, and image EXIF data, along with information about the corresponding file type. File Helper can also view and convert images to several common formats. Have an unknown file or a file without an extension? No problem — File Helper can identify over 15,000 file types.