XnViewMP for Mac
XnViewMP is a huge and good editor, viewer and converter. Supports more than 600 image formats (jpeg, png, pdf etc.) and export to about 100 different file formats.
App description: XnViewMP 0.87
App description: Multimedia
The good: Free
The bad: None
Updated: Sep 14, 2017
System requirements: Mac OS X 10.6 or later