device: 0.728
graphic: 0.633
other: 0.620
network: 0.450
vnc: 0.273
files: 0.245
boot: 0.172
PID: 0.152
semantic: 0.079
performance: 0.076
socket: 0.071
debug: 0.066
permissions: 0.052
KVM: 0.005

option to take screenshot with screendump as PNG
Additional information:
Libvirt already have preparation for PNG MIME type: https://github.com/libvirt/libvirt/blob/master/tools/virsh-domain.c#L5526


Thanks