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Intersection Observer

Performance JavaScript libraries Visit www.w3.org

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.

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32k live Intersection Observer sites, ready to export.

That's how many Intersection Observer websites are in VersionDB right now, each with its full tech stack, contact details, and social profiles.

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Intersection Observer companies in the United States

Every Intersection Observer website we detected in the US.

Companies with personnel emails

Only sites where a personal, company-hosted email was found.

Decision makers on LinkedIn

Sites with at least one personnel LinkedIn profile.

Top 100,000 Intersection Observer sites by traffic

Start with the highest-traffic end of the dataset.

Sites on a .com domain

Limit results to Intersection Observer websites on .com domains.

Companies with phone numbers

Only sites where an organisation phone number was found.

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Complementary Technologies

Intersection Observer Complementary Technologies

Technologies frequently found with Intersection Observer.

Intersection Observer Versions
VersionSites
028,658
24
Most Frequent Complementary Tech
jQuery 31,518
jsDelivr 28,761
Cloudflare 20,335
Google Hosted Libraries 17,481
PHP 14,767
Google Analytics 13,715
Apache HTTP Server 10,057
Slick 10,025
Powergap 9,517
Pinterest 9,059
Live Websites

Websites Using Intersection Observer

Live sites we caught running Intersection Observer in the wild, straight from the latest crawl.

DomainServer LocationASNCrawl Date
rejoiceuniversity.edu.pl๐Ÿ‡บ๐Ÿ‡ธ United StatesInterserver, IncJuly 28, 2026
pgpkecmuaratembesi.org UnknownCloudflare, Inc.July 28, 2026
echalket.com๐Ÿ‡ฌ๐Ÿ‡ง United KingdomEnix LtdJuly 28, 2026
uyocitypoly.edu.ng๐Ÿ‡บ๐Ÿ‡ธ United StatesMajestic Hosting Solutions, LLCJuly 28, 2026
ue.ac.zm๐Ÿ‡ฟ๐Ÿ‡ฒ ZambiaGoDaddy.com, LLCJuly 28, 2026
dotlnd.com๐Ÿ‡บ๐Ÿ‡ธ United StatesInterserver, IncJuly 28, 2026
hotel-golf.cz๐Ÿ‡จ๐Ÿ‡ฟ Czech RepublicCloudflare London, LLCJuly 28, 2026
oiot.pl UnknownCloudflare, Inc.July 27, 2026
nxtskills.io๐Ÿ‡ฎ๐Ÿ‡ด British Indian Ocean TerritoryHostinger International LimitedJuly 27, 2026
giitafrica.com๐Ÿ‡ณ๐Ÿ‡ฌ NigeriaHetzner Online GmbHJuly 27, 2026
Identifiers

Top Intersection Observer Identifiers

Who is using Intersection Observer and where: top five by detected sites.

Technology
jQuery 31,518
jsDelivr 28,761
Cloudflare 20,335
Google Hosted Libraries 17,481
PHP 14,767
Language
Japanese 25,074
English 3,078
Indonesian 698
French 487
Estonian 300
ASN
Cloudflare, Inc. 16,981
Amazon.com, Inc. 8,819
Xserver Inc. 580
GMO Internet Group, Inc. 560
Cloudflare London, LLC 553
TLD
com 10,980
jp 7,284
ec 4,517
shop 3,825
net 1,079
Country
Japan 11,715
Unknown 9,664
Ecuador 4,519
United States 2,214
France 426
Deep Dive

Most Frequent Intersection Observer Identifiers and Complementary Tech

Most frequently encountered identifiers for Intersection Observer and its complementary technologies.

TechnologySites
jQuery31,518
jsDelivr28,761
Cloudflare20,335
Google Hosted Libraries17,481
PHP14,767
Google Analytics13,715
Apache HTTP Server10,057
Slick10,025
Powergap9,517
Pinterest9,059
Google Tag Manager6,319
MySQL5,835
WordPress5,828
HTTP/35,340
jQuery Migrate5,014
Swiper3,194
imagesLoaded2,985
Elementor2,911
Amazon Web Services2,787
Amazon CloudFront2,715
Headroom.js2,599
Nginx2,540
HSTS2,200
Underscore.js2,047
cdnjs1,997