So, I've just started using a program called paint.net to crop and save images to be uploaded to TMdb. What I noticed is how, images saved from this program pretty much retain the file size those images had before they were cropped (as saved on my computer before editing/cropping).
Up until now I've been using (MS?) Paint to crop and save images. But they've always been significantly reducing the image file size of images after cropping and saving. I've compared 2 large images on their quality using Paint vs using Paint.net. To me, there doesn't seem to be a difference in quality (or, a difference at all- visually).
The question: does saving images in Paint reduce the quality of images?
Am I stupid for assuming image file size is associated with image quality? Have I been reducing the quality of images by using Paint? I think I've asked this before, but I don't think I've gotten an actual response (or I only asked it in passing/it wasn't the main question/focus of a post).