Create and delete additional image sizes for your WordPress site/blog as well as resize the predefined WordPress sizes.
At the top of the Additional Images Sizes options page you will see a matrix of your custom image sizes. On first load it will be empty and you will just see a form at the "bottom" of the matrix.
Once you have created a new image size (or edited the predefined WordPress image sizes in Settings > Media) you will need to create the new image size(s) for previously uploaded images. New images will automatically be created in all sizes.
Optionally choose what size(s) to check.
There are other optional settings you can adjust depending on your server, how many new sizes you are attempting to do at once, and which way the wind is blowing. We have attempted to set these to work optimally for most folks. But if your setup is a little better than most, only doing one image size at a time, or don't have too many images on the server already try turning these up. Conversely if you are having problems turn these down. Explanation of these settings is included on the page.
By default "Check but don't actually delete" is selected and this will only show you what WOULD be deleted. If you are sure the results are what you want to delete then uncheck "Check but don't actually delete" and run it again. The physical image files will be removed from the server and your attachment metadate updated. There is no undo. Use at your own risk.
Very first release, features are:
Add an Imagescreen.