(also called Beacon or Web Beacon) – An HTML object or code that transmits information to a third-party server, where the user is the first party and the site they are interacting with is the second party. Pixels are used to track online user activity, such as viewing a particular web page or completing a conversion process.
o Ad Creative Pixel - A pixel request embedded in an ad tag which calls a web server for the purpose of tracking that a user has viewed a particular ad. o Conversion Pixel - An image tag or code that transmits to a third-party server that a user has successfully completed a process (such as purchase or registration). o Piggyback Pixel – An image tag or code that redirects a user browser to another pixel not directly placed on the publisher page.