Assuming you are working on a Windows PC.
- To utilize "drag & drop", open a new post like always.
- In another window, open Windows Explorer.
- Find the image you want to post.
- Using the "Restore Down" / "Maximize" button between the "minimize" (-) button and "close window (X)" button in the upper right corner of the window, shrink the Win Explorer window and move it so you can see a portion of the comment section of your new post.
- Left click and hold down on the mouse button as you "drag" the image to the comment area of your post. Release the mouse button to "drop" a copy of the image into your post.
- As you are moving the image, you will see a "move" tag appear attached to your cursor. Don't panic, you're moving a copy of the image, not the original.
- The file will show up below the comment section of the post you're composing, under the "Attachments" tab.