Technology · JavaScript libraries
detected by AwesomeTechStack auditsw3.org
About Intersection Observer
Intersection Observer is a browser API that provides a way to observe the visibility and position of a DOM element relative to the containing root element or viewport.
How we audit Intersection Observer
We measure the detected version against Intersection Observer's release history and grade the surrounding stack with a Lighthouse-grade quality audit. Weak or outdated links weigh more - one risky dependency can pull the whole score down.
How the score worksAudit any site that runs Intersection Observer.
Enter a URL to score its stack for technology quality, version health, Lighthouse performance - and AI-readiness.
