mathjax/MathJax — pull request #750 by rbrito (2014-02-24 20:27:30+00:00)
Title: images: Optimize PNG images further with optipng and advpng. (Closes #748)

The commands used for recompression were:

optipng -zc1-9 -zm1-9 -zs0-3 -f0-5 *.png
advpng -z3 *.png
advpng -z4 -i500 *.png

Note that advpng uses different algorithms when recompressing the image. The
3 refers to 7zip's deflate implementation, while 4 refers to Google's
zopfli. For zopfli, the argument to -i specifies how many iterations to
run.

Signed-off-by: Rogério Brito