Hints for nomacs in universe

nomacs.desktop ⚙ amd64

asv-cid-desktopapp-is-not-rdns
nomacs.appdata.xml:10 - nomacs.desktop
The component ID is not a reverse domain-name. Please update the ID to avoid future issues and be compatible with all AppStream implementations. You may also consider to update the name of the accompanying .desktop file to follow the latest version of the Desktop-Entry specification and use a rDNS name for it as well. In any case, do not forget to mention the new desktop-entry in a <launchable/> tag for this component to keep the application launchable from software centers and the .desktop file data associated with the metainfo data.
asv-component-name-missing
nomacs.appdata.xml -
The component is missing a name (<name/> tag).
asv-screenshot-no-media
nomacs.appdata.xml:25 -
A screenshot must contain at least one image or video in order to be useful. Please add an <image/> to it.

asv-id-tag-has-type
nomacs.appdata.xml:10 - nomacs.desktop
The <id/> tag still contains a `type` property, probably from an old conversion to the recent metainfo format.
asv-url-not-secure
nomacs.appdata.xml:23 - http://nomacs.org
Consider using a secure (HTTPS) URL for this web link.
asv-content-rating-missing
nomacs.appdata.xml -
This component has no `content_rating` tag to provide age rating information. You can generate the tag data online by answering a few questions at https://hughsie.github.io/oars/