Intersection Observer is an API that is used for numerous purposes. It is used for the purpose of lazy loading images and auto-pause of video. It also enables its users to check how much the content has been viewed by its readers. It is available for use on all major browsers. It is also available for use on Desktops, Android Chrome, Android Firefox and iOS Safari. Intersection Observer allows users to track the actual visibility of a target element in an effective manner. It also prevents the possibility of false positives and prevents false negatives. It provides a callback function along with options which come with root, rootMargin and threshold.
4,818,747
websites using Intersection Observer
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Websites using Intersection Observer by countrymarket share · top 8 countries
🇺🇸United States
🇬🇧United Kingdom
🇩🇪Germany
🇫🇷France
🇨🇦Canada
🇷🇺Russian Federation
🇦🇺Australia
🇧🇷Brazil
0%3%6%9%12%
Websites using Intersection Observer by industrydetected industries
Technology & Computing19%
Medical & Healthcare17%
Education17%
Construction16%
Shopping15%
Marketing & Advertising15%
Websites using Intersection Observer
showing 25 of 4,818,747| Website | Country | Industry | Size | Founded | |
|---|---|---|---|---|---|
| 🇺🇸US | Entertainment | 201-500 | 1991 | ||
| 🇧🇷BR | Technology & Computing | 501-1000 | 2000 | ||
| - | - | 1-10 | - | ||
| 🇬🇧GB | Print & Publishing | 1001-5000 | - | ||
| 🇪🇪EE | Software Development | 201-500 | 2016 | ||
| 🇺🇸US | Technology & Computing | 10001+ | - | ||
| 🇷🇺RU | Software Development | 501-1000 | 2017 | ||
| 🇺🇸US | Movies & TV | 1001-5000 | 1980 | ||
| 🇺🇸US | Software Development | 1001-5000 | 2005 | ||
| 🇺🇸US | Telecommunications | 10001+ | 1995 | ||
| 🇺🇸US | Software Development | 1001-5000 | 2012 | ||
| 🇺🇸US | Education | 501-1000 | 2011 | ||
| 🇺🇸US | Technology & Computing | 501-1000 | 2006 | ||
| 🇷🇺RU | Technology & Computing | 10001+ | 2000 | ||
| 🇺🇸US | Cybersecurity | 10001+ | 2005 | ||
| 🇺🇸US | Technology & Computing | 5001-10000 | - | ||
| 🇺🇸US | Movies & TV | 201-500 | 1982 | ||
| 🇺🇸US | Software Development | 5001-10000 | 2006 | ||
 shopify.com | 🇨🇦CA | Software Development | 10001+ | 2006 | |
| 🇺🇸US | Hardware & Electronics | 10001+ | 1993 | ||
| 🇨🇳CN | Software Development | 10001+ | 2010 | ||
| 🇺🇸US | Entertainment | 201-500 | 2007 | ||
| 🇺🇸US | Software Development | 501-1000 | 2015 | ||
| 🇺🇸US | Books & Literature | 51-200 | 1996 | ||
| 🇺🇸US | Technology & Computing | 5001-10000 | 1997 |
Showing 25 of 4,818,747 websitesGet the full list →
Frequently asked
What is an Intersection Observer?›
An Intersection Observer is a modern browser API that provides an efficient way to track and respond to elements as they become visible or invisible in the viewport. It is designed to optimize performance by reducing the need for frequent updates or scrolling event listeners.
How does Intersection Observer differ from traditional scroll event listeners?›
Traditional scroll event listeners require constant checking for changes to the viewport, which may impact performance. Intersection Observer, on the other hand, uses an asynchronous mechanism to automatically track elements when they cross thresholds defined by the developer, resulting in a more performance-friendly solution.
Which browsers support the Intersection Observer API?›
Intersection Observer is supported by modern browsers like Chrome, Firefox, Edge, and Safari. However, it may not be available in some older browsers or those that do not follow the standard specification. You can check compatibility on sites like Can I Use (https://caniuse.com/intersectionobserver).
Can Intersection Observer be used for lazy-loading images?›
Yes, the Intersection Observer API is an excellent solution for implementing lazy-loading. By monitoring elements as they enter the viewport and only loading the image when necessary, you can reduce the initial page load time and improve overall website performance.
What is a common use case for Intersection Observer besides lazy-loading images?›
Apart from lazy-loading images, Intersection Observer can be used for various purposes including infinite scrolling, triggering animations when elements come into view, reporting visibility-related metrics to an analytics tool, or even implementing a "read" indicator for articles based on the user's scroll position.
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