# xdg-mime > Query and manage MIME types according to the XDG standard. > More information: . - Display the MIME type of a file: `xdg-mime query filetype {{path/to/file}}` - Display the default application for opening PNGs: `xdg-mime query default {{image/png}}` - Display the default application for opening a specific file: `xdg-mime query default $(xdg-mime query filetype {{path/to/file}})` - Set imv as the default application for opening PNG and JPEG images: `xdg-mime default {{imv.desktop}} {{image/png}} {{image/jpeg}}`