Click "Reply", then paste in link.
Highlight the Link, then click on the Insert Image icon above (first square from the left at the bottom row above).
Click "Post". Note, this does not work on 'Quick Reply'.
Alternately, you can use type....
img with the brackets [ ] around it at the front of the link.
/img with the brackets [ ] around it at the end of the link.
Note, this only works with Images or Gifs.
