Open the page where you have included the pixel. If the extension discovers
the pixel, then the </> extension icon turns blue and a popup will show up
displaying the pixels it finds on the given page. This popup will inform you
whether the pixel is working as intended or not. If not, then an error message
will show up, and you need to make the necessary changes.
Step five: Add a pixel notice to your site
If you don’t want to violate Facebook’s terms of use, then you must be sure
to include a notice on your website informing the users that their data is being
collected. This means that you must provide an unambiguous notice that you
are using Facebook Pixel and that the users’ information is being collected
via cookies or any other means. You must also inform the users they have the
option to opt out of their data being collected. You must carefully go through
Facebook’s Business Tool Terms about the Special Provisions Concerning
the Use of Facebook Pixels and SDKs.