download  install  test and skin XnViewMP 0.12 alpha on Ubuntu .

You can download tar.gz or DEB here -> Le Webinard du débutant (in green panels)    click a thumbnail to enlarge

1-download-save file-click OK.	2- save on desktop.	3-extract here.
4-open folder XnViewMP.	5-open xnview.sh.	6-click Run.
7-here we are- Here in Pictures repertory - select yellow butterfly.	8-Then left double-click the thumbnail.	9-Or click fullscreen.