puggan

You just uploaded a few images to you blog, and notice that the thumbnails cut off the heads of them, 
here is a tool to specify exactly how you want your thumbnails cut, you can zoom in and drag the thumnail 
area to the position that you want. 
This tool is even more useful in combination with theams and plugins that use of thumbnails.

Reposition Thumnails

A pluggin for the moments when the center of the picture wasn't that good as thumnail, so you can avoid cut of heads in yout thumbnails.

socialeum

Scan and delete unwanted auto-generated WordPress images and save huge diskspace. Delete thumbnail sizes (started or ended with 150px, 280px 300px or 1024px) and move them to a trash folder inside your uploads directory. Preview and restore images from the trash.
Whenever you upload an image, WordPress creates three additional resized versions of that image. This increases your hosting inodes and unnecessarily occupies disk space.

Auto Generated Images Remover

Short Description: Scan and remove auto-generated WordPress image thumbnails safely.

Reposition Thumnails vs Auto Generated Images Remover