zencoder/video-js — pull request #262 by ChALkeR (2012-12-14 04:29:43+00:00)
Title: Optimize png images (using pngcrush and optipng).

video-js.png: 8235 bytes → 4660 bytes, 43% (3.5 KiB) decrease.
Icon Design.png: 86601 bytes → 18916 bytes, 78% (66 KiB) decrease.

pngcrush command:
find . -name \*.png | xargs -I{} -n1 pngcrush -brute -reduce -ow "{}"
optipng command:
find . -name \*.png | xargs -I{} -n1 optipng -o7 -zm1-9 "{}"

initial sizes:
86601 Icon Design.png
8235 video-js.png
optipng sizes:
82317 Icon Design.png
4660 video-js.png
pngcrush sizes:
21211 Icon Design.png
6001 video-js.png
pngcrush+optipng sizes:
18916 Icon Design.png
4660 video-js.png
optipng+pngcrush sizes:
82317 Icon Design.png
4660 video-js.png

pngcrush + optipng was used.