gnome-font-viewer from openSUSE:Backports:SLE-15-SP4 project
Select Your Operating System
Add repository and install manually
For step run the following as root:
zypper addrepo https://download.opensuse.org/repositories/openSUSE:Backports:SLE-15-SP4/step/openSUSE:Backports:SLE-15-SP4.repo zypper refresh zypper install gnome-font-viewer
For standard run the following as root:
zypper addrepo https://download.opensuse.org/repositories/openSUSE:Backports:SLE-15-SP4/standard/openSUSE:Backports:SLE-15-SP4.repo zypper refresh zypper install gnome-font-viewer