As Joe mentioned in his post on image optimization apps making screenshots and dealing with images is a core part of making websites and for me making my application.
Joe recommended RetroBatch in his post. I had bought RetroBatch a while ago - I think Joe had mentioned it before. RetroBatch is a super clever app. But using it on images is clunky.
I made an AppleScript and an Alfred workflow that can run a RetroBatch workflow. Instead of having to select and remove images every time a RetroBatch workflow runs I now type "retro" to execute the Alfred workflow. Then I select the images in a dialog and RetroBatch does its magic.
There is a blog post on my website describing what the AppleScript and the Alfred workflow do. The download is on the Xojo + Alfred page.
I hope that the links work.