[root@666 drawable-hdpi-v4]# convert ic_launcher.jpeg ic_launcher.png [root@666 drawable-hdpi-v4]# file ic_launcher.png ic_launcher.png: PNG image data, 72 x 72, 8-bit/color RGB, non-interlaced [root@666 drawable-hdpi-v4]# ll ic_launcher. ic_launcher.jpeg ic_launcher.png # rpm -qf /usr/bin/convert ImageMagick-6.7.8.9-15.el7_2.x86_64
原文：http://www.cnblogs.com/bass6/p/7610644.html