#Resource locations

###gifsicle
[http://www.lcdf.org/gifsicle/](http://www.lcdf.org/gifsicle/)

###jpegtran
[http://jpegclub.org/jpegtran/](http://jpegclub.org/jpegtran/)

###optipng
[http://optipng.sourceforge.net/](http://optipng.sourceforge.net/)

###pngout
[http://advsys.net/ken/utils.htm](http://advsys.net/ken/utils.htm)