jquery/jquery-mobile — pull request #6389 by pereorga (2013-08-24 22:31:32+00:00)
Title: Theme: Optimize images using lossless compression

I've saved 7682 bytes in the default theme using tools such as AdvPNG, Zopfli (PNGs) and Gifsicle (GIF).

Image quality has not been affected, as these tools compress images losslessly.