The Facebook Pixel Helper works in the background to automatically review the websites you browse and whether any tracking code has been installed correctly or not.
You can install the Facebook Helper Chrome Plugin by visiting - https://chrome.google.com/webstore/detail/facebook-pixel-helper/fdgfkebogiimcoedlicjlajpkdmockpc?hl=en
You can read the official Facebook instructions for this video at https://developers.facebook.com/docs/facebook-pixel/pixel-helper
The video was created using Article Video Robot (my first attempt using it, took maybe 15 minutes to make). You can find out more about AVR at - http://www.spadesmedia.com/articlevideorobot.html
Being able to track and troubleshoot your Facebook pixel implementations will ensure that any Facebook advertising campaigns you run are optimised for success.