Adding Media to Posts and Pages
Media can either be added to a Post or Page by dragging-and-dropping files from your computer, or accessing your Media Library. Click the “Add Media” button above the Toolbar in the Editor to choose your media.
If you are uploading more than one image or video to use in multiple posts, it is quicker and easier to add them to your Media Library first and then access them from the Post or Page. You can add media after a Post or Page has already been published or submitted for review.