For a recent project, I had a need for a pretty simple workflow. I had a couple of image sizes, which I added with the add_image_size function which required a hard crop to a certain aspect ratio. The workflow for authors I was looking for was:
- Upload Image
- Edit the crop for these special sizes if they feel like
- Insert into post
All of this on the same screen. After installing and downloading a bunch of different options, I’m going to formally recommend Manual Image Crop.
It’s not the prettiest option (that’s Post Thumbnail Editor), but it is the simplest and most flexible. It has a few options for each image size, but basically once you upload your image you can select the “Crop Image” option and then automatically create a new image crop for each size. And everything is brought into a pop-up window so you never have to leave the Media Uploader.
So anyway, if you’re looking for a good post thumbnail crop editor, try out Manual Image Crop.