My website has been loading slowly so I ran a check at http://www.webpagetest.org/ and my biggest problem is I need to optimise my images - "Optimize images: Optimizing the following images could reduce their size by 1.5MiB (74% reduction). "
They suggest a 74% reduction should be possible. This would really help.
I assumed all of the images were already optimised as I have the plugin installed, but I ran the bulk optimise anyway and it did not reduce a single image of the nearly 600. There was no saving in any of them.
So I assume that it is not working correctly. Here is the plugin status box:
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 1.70
Graphics libraries - only need one, used for conversion, not optimization: GD: OK Imagemagick 'convert': OK
safe mode: Off exec(): OK file command not found on your systemnice command not found on your system (not required)
Only need one of these: finfo: OK getimagesize(): OK mime_content_type(): OK
It looks like something isn't installed correctly - can you help with what I need to do please? I am not a strong WP user and all this techie stuff is really hard for me!