Websites using Intersection Observer

Q: How does VersionDB detect Intersection Observer?

Through our own crawl, which checks each site's HTML, scripts and headers rather than relying on self-reported data.

Q: How current is this data?

The figures on this page come from our September 2026 crawl. VersionDB runs a fresh crawl every month, and the database spans multiple monthly crawls.

Q: Can I download a list of Intersection Observer websites?

Yes. The Lead List Exporter lets you filter the 36,291 Intersection Observer sites by country, traffic and contact details, see the row count for free, and pay once for the rows you export. To try it first, the Free Lead List Exporter exports up to 10 matching domains at no cost, from a subset of our crawl.

Performance JavaScript libraries

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.

Lead List Exporter

36.2k 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.

Pick a ready-made template, or build your own filters in the Lead List Exporter and pay only for the rows you export.

Open the Lead List Exporter

Just need a few domains? Export up to 10 free from a subset of our crawl.

Start with a list template

Intersection Observer companies in Japan

Every Intersection Observer website we detected in Japan.

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.

Create your own

Versions

Which Intersection Observer versions are most used?

We could read a version number on 91% of Intersection Observer sites. Of those, the most common are Intersection Observer 0, on 32,939 sites and Intersection Observer 2, on 4 sites.

100% on v0

Versions detected: 2
Sites with a version: 32,943

Share of sites by version

v0 100% 32,939 v2 <1% 4

Live Websites

Websites Using Intersection Observer

A sample of live Intersection Observer sites from our latest crawl, with the other technologies each one runs.

Open in the Lead List Exporter

Domain	Also runs	Crawl Date
line-rs.co.jp	jQuery PHP HTTP/3 HSTS Apache HTTP Server	September 27, 2026
apupsg.ac.in	jQuery PHP MySQL HTTP/3 WordPress	September 27, 2026
cookserveenjoy.com	jQuery HTTP/3 HSTS Bootstrap Cloudflare	September 27, 2026
regdipdoc.com	jQuery PHP MySQL WordPress Nginx	September 27, 2026
majesticsaigon.com	jQuery PHP MySQL HTTP/3 WordPress	September 27, 2026
math-helib.com	jQuery PHP MySQL HTTP/3 WordPress	September 27, 2026
ispt.ac.mz	jQuery PHP MySQL WordPress jQuery Migrate	September 27, 2026
equihealthsolutions.org	jQuery PHP MySQL HTTP/3 WordPress	September 27, 2026
onslaught-film.de	HTTP/3 HSTS Cloudflare Google Hosted Libraries cdnjs	September 27, 2026
bsmi.uz	jQuery PHP MySQL WordPress Nginx	September 27, 2026

How many websites use Intersection Observer?

We found Intersection Observer on 36,291 websites in our September 2026 crawl, across 122 countries.

Which countries use Intersection Observer the most?

By number of websites, the top countries are Japan (35%, 12,610 sites), Ecuador (15%, 5,350 sites), United States (6%, 2,221 sites), France (1%, 479 sites) and Estonia (1%, 429 sites). Together they account for 58% of the 36,291 Intersection Observer sites we track. 80% of the sites are in Japanese, and .com is the most used domain ending, on 31% of them.

Where are Intersection Observer websites hosted?

The networks carrying the most Intersection Observer sites are Cloudflare, Inc. (20,044 sites), Amazon.com, Inc. (9,317 sites) and CLOUDFLARENET (1,076 sites).

What technologies are used with Intersection Observer?

Across the 36,291 Intersection Observer sites we track, the technologies most often found alongside it are jQuery (99%, 35,778 sites), jsDelivr (91%, 33,036 sites), Cloudflare (66%, 24,115 sites), Google Hosted Libraries (58%, 21,144 sites) and PHP (41%, 14,842 sites).

Deep Dive

Breakdown of Intersection Observer websites

What else they run, plus their language, hosting network, domain extension and country.

Technology	Sites
jQuery	35,778
jsDelivr	33,036
Cloudflare	24,115
Google Hosted Libraries	21,144
PHP	14,842
Google Analytics	14,368
Pinterest	11,164
Powergap	11,086
Slick	10,490
Apache HTTP Server	10,366
Google Tag Manager	6,675
HTTP/3	5,504
MySQL	5,430
WordPress	5,424
jQuery Migrate	4,811
Swiper	3,158
imagesLoaded	2,958
Amazon Web Services	2,917
Elementor	2,895
Amazon CloudFront	2,853
Headroom.js	2,600
HSTS	2,261
YouTube	2,259
Nginx	2,245
Underscore.js	2,058

Language	Sites
Japanese	29,126
English	3,130
Indonesian	732
French	558
Estonian	296
Italian	219
Spanish	216
Chinese	201
Russian	182
German	176
Latin	110
Persian	91
Polish	86
Portuguese	81
Tagalog	75
Vietnamese	74
Turkish	69
Dutch	63
Arabic	49
Czech	45
Shona	36
Romanian	35
Greek	34
Swahili	34
Danish	29

ASN	Sites
Cloudflare, Inc.	20,044
Amazon.com, Inc.	9,317
CLOUDFLARENET	1,076
Cloudflare London, LLC	570
Hostinger International Limited	496
Zone Media OU	425
Xserver Inc.	404
GMO Internet, Inc.	395
Microsoft Corporation	395
Google LLC	328
OVH SAS	326
WHG Hosting Services Ltd	192
Hetzner Online GmbH	115
IONOS SE	87
DigitalOcean, LLC	85
GoDaddy.com, LLC	85
SAKURA Internet Inc.	82
Namecheap, Inc.	68
Aruba S.p.A.	49
Jsc timeweb	44
FPT Telecom Company	41
Beget LLC	36
New Dream Network, LLC	36
Fusioned Ltd	34
Combell NV	30

TLD	Sites
com	11,170
jp	7,930
shop	6,253
ec	5,348
net	1,167
org	911
ee	322
fr	253
ca	178
tokyo	149
it	141
info	131
in	123
ru	123
de	111
uk	99
au	87
site	78
pl	77
biz	62
online	59
eu	56
co	51
vn	47
ir	45

Country	Sites
🇯🇵 Japan	12,610
Unknown	11,913
🇪🇨 Ecuador	5,350
🇺🇸 United States	2,221
🇫🇷 France	479
🇪🇪 Estonia	429
🇮🇳 India	279
🇮🇹 Italy	240
🇩🇪 Germany	237
🇨🇦 Canada	195
🇸🇬 Singapore	185
🇬🇧 United Kingdom	170
🇷🇺 Russia	159
🇨🇾 Cyprus	115
🇵🇱 Poland	94
🇻🇳 Vietnam	94
🇦🇺 Australia	93
🇪🇸 Spain	86
🇮🇷 Iran	81
🇧🇪 Belgium	66
🇬🇷 Greece	62
🇹🇷 Turkey	62
🇮🇩 Indonesia	61
🇳🇱 Netherlands	61
🇦🇪 United Arab Emirates	51