Images don't change after optimization.

it says no savings after either bulk optimization or re opitimize

Please post the plugin status section after clicking the Debug link. It could be related to a bug that’s fixed in the upcoming 1.4.0 release, but I can’t say too much without proper information.

Plugin Status

If updated versions are available below, you may need to enable write permission on the wp-content/ewww folder to use the automatic installs.
*Updates are optional, but may contain increased optimization or security patches
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 1.68
Graphics libraries (only used for conversion, not optimization): GD: OK?? Imagemagick ‘convert’: OK
safe mode: Off??exec(): OK??shell_exec(): OK??
Only need one of these: finfo: MISSING??getimagesize(): OK??mime_content_type(): MISSING

There’s a good possibility that you’re being hit by a bug that I fixed in the dev version. Trying to work out some kinks with jpegtran before the 1.4.0 release, the fix will be included there, or you can manually install the latest ‘dev’ version. If you use ftp, make sure to upload the binaries in binary mode, not automatic or ascii.

If you’re still seeing this problem, please post a url to one of your un-optimized images, and I’ll check it out.

Think I’m ok now. Haven’t been working on it for awhile will get back to you if I see it happening again. thanks for checking in