If there is an image you want to include in your post, but don't want to have to download it and re-upload it to your site, you can use the images URL to embed an image into your post.
Copy Image URL
First, let’s find an image we want to use. Let’s say we want to use this image (image of social-media logos). Just right-click on the image and select: copy image URL. depending on your browser, this might say something like copy image location or copy image address.
Now when we go back to our editor, we can go to add media and there’s an option called ‘insert from URL’. Now you can right click in the address box and select ‘paste’. This will bring up a thumbnail for our link, from here we can add some information about our image and adjust its post settings. When you are done, click ‘insert into post’.
Now since the image is not actually on your server, you do not have full control over it. If anyone changes or deletes the image from the original server, your image will be affected here. Preview your post by clicking preview, or hit publish.