Thanks for your extensive answer. What is not clear to me is how icons for application-specific documents are handled. To use the example you refer to: [Desktop Entry] Version=1.0 Type=Application Name=Foo Viewer Comment=The best viewer for Foo objects available! TryExec=fooview Exec=fooview %F Icon=fooview MimeType=image/x-foo; The desktop icon for the application is specifed by `Icon=fooview`. But where/how to specify the icon for `image/x-foo` documents? _______________________________________________ packaging mailing list -- packaging@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to packaging-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/packaging@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure