The element visibility trigger is a new addition to Google Tag Manager (GTM). The word ‘element’ in ‘element visibility trigger’ refers to an HTML element. This element could be tag, tag, , tag etc. The word ‘visibility’ in ‘element visibility trigger’ refers to the visibility of an HTML element(s) in a web browser’s viewport. The word ‘trigger’ in ‘element visibility trigger’ refers to the GTM trigger which is fired when an HTML element(s) become visible in a viewport.