Pano2VR
Javascript API of pano2vr
http://ggnome.com/wiki/JavaScript_API_%28Pano2VR%29
Multiple tile size according to multiple screen size of mobile device
A demo: http://xx7y7xx.github.io/demo/pano2vr/multiple_tile_size/output/html5.html
Project file: http://xx7y7xx.github.io/demo/pano2vr/multiple_tile_size/pano.p2vr
Reference: http://ggnome.com/wiki/HTML5Output_Settings%28Pano2VR%29#Mobile_Tab