gwenview5 from home:alarrosa:branches:openSUSE:Backports:SLE-15-SP4:kimageformats project

Select Your Operating System

For standard run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:alarrosa:branches:openSUSE:Backports:SLE-15-SP4:kimageformats/standard/home:alarrosa:branches:openSUSE:Backports:SLE-15-SP4:kimageformats.repo
zypper refresh
zypper install gwenview5