When you already have your post set up with the image included, you may find that the image that you have already just doesn’t quite suit the content. Luckily, WordPress makes it easy to replace the image in your content.
To get started, simply click the image in the editor and then in the upper left-hand corner click Delete. This will place the cursor right where the image was in relation to the text.
Next, click the Add Media button above the content editor’s toolbar. In this window you’ll have the option to upload an image from your computer to replace it with, or if you’d like, you can use one that you’ve already uploaded in the past from the media library.
I’m going to go ahead and drag this image from my desktop into the window. You’ll notice a progress bar on the thumbnail and that it’s automatically selected after upload. On the right-hand side you’ll see details about the image.
When the formatting is as you’d like it, simply click Insert into Post. You can click Preview Changes to preview the changes before they go live on the web or click Update or Publish to publish your changes.