IMPORTANT – If you activate URL Shortener, you will get completely new addresses for pages and posts. This will make your share counters start from zero.
Use wp_get_shortlink() – tick off this if you wish to generate shortlinks with build in WordPress function or WordPress plugin you have installed on your site
Use goo.gl to generate short URL – tick off if you wish to generate shortlinks with goo.gl service. There is no registration needed to use goo.gl shortener. Sometimes when overloaded there is delay in address returning. This may increase the loading speed of your site
Use bit.ly to generate short URL – tick off if you wish to generate shortlinks with bit.ly service. There is registration requirement to use bit.ly shortener but it works flawlessly any time
bit.ly user – paste here your bit.ly username
bit.ly API key – paste here your bit.ly API key. Go to your bit.ly profile settings -> Advanced -> at the bottom of the screen you will see your API key
Use j.mp domain in bit.ly – if activate, you will get for short address something like j.mp/abcdef instead of bit.ly/abcdef. The difference is that whit j.mp you have two symbols less than bit.ly