This plugin adds two columns, MIME type and Encoding using FileMimeTypeDetector from DOpus-Scripting-Extensions.
The plugin uses the content of a file and not its extension.
The screenshot below shows how the encoding and MIME type are correctly determined, even for files with incorrect extensions.

- Mime-type aliases can be specified by modifying
mimeTypeAliasesdictionary at the beginning of the script
- The encoding doesn't show if a file has BOM or not. You can use DirectoryOpus-TextFileEncoding-plugin if you need this functionality.
- You need to have DOpus-Scripting-Extensions installed: download it from the release page
- The script doesn't support DOpus portable mode because it requires a PC to have
DOpus-Scripting-Extensionsinstalled. - The plugin is relatively fast but not instantaneous. Thus, for a folder with many files, you might need to wait a little bit for all files to get its MIME type.
- Make sure DOpus-Scripting-Extensions are installed
- Download the
jsfile from the latest release - Copy the
jsfile to the%AppData%\GPSoftware\Directory Opus\Script AddInsfolder - The extra columns will become available in the
Settings->File Display Columns->Appearance->Columns:. - The script uses aliases for common MIME types. You can change them by modifying the
mimeTypeAliasesvariable at the beginning of the script.
- Discussion of this plugin on DOpus forum: File MIME type column