As requested, here is an example of an Apple Pages document, taken from an online templates website.
** Attachment added: "New Job Resignation Letter.pages" https://bugs.launchpad.net/ubuntu/+source/mime-support/+bug/1878617/+attachment/5373328/+files/New%20Job%20Resignation%20Letter.pages ** Changed in: mime-support (Ubuntu) Status: Incomplete => New -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to mime-support in Ubuntu. https://bugs.launchpad.net/bugs/1878617 Title: Apple pages file type should be added to MIME types Status in mime-support package in Ubuntu: New Bug description: LibreOffice can open .pages files (from Apple pages). However, the mime type for these files is incorrectly just application/zip: $ file --mime-type example.pages example.pages: application/zip Instead, it should be application/vnd.apple.pages . This would allow the user to associate LibreOffice Writer with these types of files, and use it to open this file. (LibreOffice Writer can open .pages files) Apple Keynote files should have this MIME type: application/vnd.apple.keynote Apple Numbers files should have this MIME type: application/vnd.apple.numbers ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: mime-support 3.64ubuntu1 ProcVersionSignature: Ubuntu 5.4.0-29.33-generic 5.4.30 Uname: Linux 5.4.0-29-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu27 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Thu May 14 14:46:40 2020 InstallationDate: Installed on 2018-11-11 (550 days ago) InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725) PackageArchitecture: all SourcePackage: mime-support UpgradeStatus: Upgraded to focal on 2020-04-18 (25 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mime-support/+bug/1878617/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp