Renaming file types and extensions

Last published : Apr 02, 2026
You can rename existing file types and extensions as needed.
To rename a file type and extensions
  1. On the Tasks menu, click Options.
  2. Click File Types.
  3. Select a file type from the File types list, and then do one of the following:
    • Click Rename a file type to edit the name of the selected file type.
    • Select an extension from the Extensions forlist and clickRename an extension to edit the name of the extension.
  4. Click OK.
See Adding new file types and extensions.
See Restoring default file types and extensions.
See Deleting a file type and all of its extensions.
See File types and file extension.
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