Questions before installing

Hello. I have a couple questions about your plugin.

1. When I upload an image to the WordPress media library, several smaller size thumbnail images are created. Will your plugin optimize my original image and the thumbnails, or only the thumbnails? I ask because another similar free plugin (Smush) optimizes only the thumbnail images. I’m looking for something that also optimizes the original image.

2. Does your plugin have any limits as to how many images can be optimized, e.g. 100 images per month?

Thanks