What is Facebook pixel ? A pixel is an analytics tool that allows you to measure the effectiveness of your advertising by understanding the actions people take on your website. Let's take Facebook pixel for instance. Once you've set up the Facebook pixel, the pixel will fire when someone takes an action on your website. Examples of actions include adding an item to their shopping cart or making a purchase. The pixel receives these actions, or events, which you can view on your Facebook pixel page in Events Manager. From there, you'll be able to see the actions that your customers take. You'll also have options to reach those customers again through future Facebook ads.
www.small-link.com has this awesome feature built in to your link where you can track your pixels and target the audience that reacted to your campaign. You can target these audiences in similar future campaigns.