
Intersection Observer
What is Intersection Observer?
Intersection Observer belongs to JavaScript libraries and Performance categories.
Intersection Observer is a browser API that efficiently detects when an element enters or leaves the viewport, useful for implementing lazy loading and infinite scrolling.
Intersection Observer Performance Insights
2 websites
Websites using Intersection Observer
Last 30 days uptimeⓘ
100%
82
Performance
84
Accessibility
89
Best Practices
83
SEO
Intersection Observer friendly technologies
jsDelivr
jQuery
Google Analytics
Google Font API
Webpack
jQuery Migrate
Open Graph
core-js
Elementor
Module Federation
Top Intersection Observer Alternatives
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Instant.Page
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LazySizes
1251 websites|1195 uptime cardsLazySizes is a lightweight, feature-rich JavaScript library used for lazy loading images, iframes, scripts, and other resources. It intelligently loads content only when it's about to enter the viewport, significantly improving page load times and reducing bandwidth usage. LazySizes is highly configurable and works without any dependencies, making it an excellent choice for optimizing web performance.