Custom conversions let you streamline your ads for all URL traffic and custom events, that can't be simplified on their own. To streamline for them, you can create a custom conversion and choose a standard event category that's similar to the action that you want to optimise. Then Facebook can display your ads to people most likely to complete that action.
Note: All URL traffic is determined by using PageView events, which is part of your Facebook pixel base code.
Before you begin, set up a Facebook pixel on your website.
To use custom conversions to streamline for all URL traffic or a custom event:
Now you can use your custom conversion to optimise on all URL traffic and custom events.