Recently I was tasked to deploy a Facebook Pixel on an ecommerce site. While deploying tags with Google Tag Manager is normally a relatively straightforward thing to do, I found the documentation around Facebook’s Pixel to be sub-par, a bit confusing, and in need of improvement. So I decided to write this guide both to help out those readers who are perplexed about the how to deploy the pixel, as well as spill some digital ink critiquing the FB Pixel documentation.
Source: Google Tag Manager Consultant