Works very well. The only thing I lack is…

…bulk replacement.
I prepared about 20 images to replace the existing ones and it was quite tiresome to replace them one by one.
I would propose the following scenario: I mark several images in the Media Library, select the bulk action “Replace”, and then choose a directory in my computer with images with the same names. And then the plugin replaces them all in a batch fashion. (And it is impossible to accomplish this just by copying the images via FTP because of all these thumbnails, you know.)
If this idea looks crazy to you, just don’t mind it. In any case, the plugin works very well.