^ imgur secretly creates thumbnails you can access by appending letters to the identifyier. Generally you'll want to use the largest thumbnail (h).
So for example, in your case you can do
Code:
[url=https://i.imgur.com/ITtXjTd.jpg][img]https://i.imgur.com/ITtXjTdh.jpg[/img][/url]
which produces a reasonably-sized image that can be clicked on to make it bigger.