Don't use it, doesn't work properly anymore. (If you do use it, you'll need to add a /p/ after imginn.com to the URL.

This extension hasn't been updated in years, and unfortunately is doesn't redirect properly anymore.

don't work properly with pictures becasue it doesn't redirect using /p/ in the url
not updated since 3 years and git repo is not active

It would be better if there was an option to show the original page.