I’m confused about the image sizing which is available in three different format via setting > media: thumbnail, medium and large sizes.
Assume I uploaded an image to the media library, do the images get three new copies of these sizes or is it a CSS that scales the width and height?
How do I call these sizes out when editing posts where I included <img src>? I want to grab the medium size and apply it to all of my posts.
However, I could just modify the image sizes for all <img> tags in the CSS file but I’m afraid it’ll modify every single image tags outside the post boundary, plus I want to use media size tool available within WordPress.
