There seems to be a discrepancy between the text describing this application and what it actually does. The developer's website says that it is a "URL-shortener," not an image shrinker. A bundle at Paddle.com says:
Lightning fast and intelligent URL shortener.
Short Menu sits in your menubar, waiting for you to shorten an URL. It supports 20 different services and is very easy to use. Simply click on Short Menu's menubar icon to open it. It automatically takes the URL from your clipboard. You only have to press one button, then Short Menu will shorten your URL and automatically copy the short URL for you. After shortening an URL, Short Menu saves both URLs in the history and sends a notification to you. These notifications are optional and you can configure them in the preferences."