First of all: I really like this plugin compared too the Smush.it plugin.
The Smush.it plugin litters my media library database with its results (added too mysql). So there isnt even a way to re-smush images once you have replaced them.
However I am trying to optimize a directory that I did not add through the wordpress library ( because I do not want it to generate 10 thumbnails for each...)
I added the directory in settings. I can get the addon to see my images but 95% of them show no savings.I am using default settings for the plugin (level2, disable pngout).
So I took one of the pictures and uploaded it to Yahoo Smush.it and it reported 18% savings.
I am using default settings for the plugin (level2, disable pngout).
I am using XAMPP for Windows
jpegtran: OK version: Independent JPEG Group's JPEGTRAN, version 9 13-Jan-2013
optipng: OK version: OptiPNG version 0.7.4
gifsicle: OK version: LCDF Gifsicle 1.78 (Windows)
Graphics libraries - only need one, used for conversion, not optimization: GD: OK Imagemagick 'convert': MISSING
safe mode: Off exec(): OK
Only need one of these: finfo: MISSING getimagesize(): OK mime_content_type(): MISSING