Using the post editor, you can search for free images from Unsplash and add them directly to your post.
1. Click on the image icon in the editor toolbar and select "Stock photo".
2. Use the search bar to find an image. Click on an image you'd like to use and select "Insert". This will automatically add what you selected into your post.
3. To delete the image in the body of your draft, select the three dots in the top right corner of the image. To re-size the image, click on the arrow in the bottom right corner.