Websites Powered by Intersection Observer
15,310 websites tracked using Intersection Observer (Performance) · www.w3.org
Intersection Observer is a performance optimization tool that speeds up the site. Its official site is w3.org. PoweredBy tracks the websites that use Intersection Observer across the public web; the tracked counts, adoption trend, and site list on this page are updated from our ongoing crawl of the performance ecosystem.
Usage trend
2K
4K
6K
Oct 2021
Jan 2023
Mar 2024
Jun 2025
Aug 2026
Domains observed using Intersection Observer in each month's HTTP Archive crawl,
Oct 2021 to Aug 2026 · peak 5,854 in May 2026. The tracked total above also
counts sites not re-crawled recently.
Core Web Vitals
LCP 1.8 s
INP 75 ms
CLS 0
TTFB 800 ms
Median site among 6,124 Intersection Observer sites with Chrome UX data, p75 values, Aug 2026.
Top countries
Japan
3,663
India
493
United States
490
France
396
United Kingdom
318
Italy
317
Germany
272
Indonesia
256
Sites using Intersection Observer by audience country, Chrome UX Report.
Top sites by authority
9+
<1% · 2 of 372 sites
8+
<1% · 20 of 7,677 sites
7+
<1% · 59 of 45,712 sites
6+
<1% · 89 of 110,136 sites
5+
<1% · 141 of 246,751 sites
The share of the web's most authoritative domains, by Open Page Rank tier, seen running Intersection Observer in recent crawls. Only 372 domains worldwide score 9 or higher.
Websites using Intersection Observer
| # | Domain | Open Page RankOPR | Est. monthly visits (US)Visits (US) | Keywords | First seen |
|---|---|---|---|---|---|
| 1901 | ide-heart.jp | 0.46/10 | - | - | Feb 2025 |
| 1902 | idex-f.jp | 1.89/10 | - | - | Jan 2023 |
| 1903 | idiomasflow.com | 0.89/10 | - | - | Aug 2025 |
| 1904 | idm.ac.ls | - | - | - | Feb 2026 |
| 1905 | idmb.ac.bw | - | - | - | Nov 2025 |
| 1906 | idyllicinstituteofmanagement.com | 0.11/10 | - | - | Jun 2025 |
| 1907 | iesleopoldoalasclarin.com | 0.41/10 | - | - | Jul 2023 |
| 1908 | iesm.lk | 0.43/10 | - | - | Oct 2025 |
| 1909 | ififellonline.com | 1.37/10 | - | - | Dec 2021 |
| 1910 | ifswf.org | 4.76/10 | - | - | Jul 2024 |
| 1911 | igaguri-yochien.com | 0.10/10 | - | - | Nov 2023 |
| 1912 | iglobal.edu.do | 1.70/10 | - | - | Aug 2023 |
| 1913 | ignaszak.pl | 2.03/10 | - | - | Nov 2021 |
| 1914 | ihacpa.gov.au | 5.29/10 | 2,800 | 6,135 | Aug 2026 |
| 1915 | ihmfaridabad.com | 1.12/10 | - | - | Feb 2026 |
| 1916 | iiceshimla.in | 0.43/10 | - | - | May 2026 |
| 1917 | iink.okinawa.jp | - | - | - | Jan 2025 |
| 1918 | iipmp.org | - | - | - | Jul 2025 |
| 1919 | iiyama-teuchisoba-atami.com | 0.31/10 | - | - | Jun 2023 |
| 1920 | ikahoff.co.jp | 0.45/10 | - | - | Oct 2021 |
| 1921 | ikawa-jidousha.com | 0.33/10 | - | - | Aug 2022 |
| 1922 | ikebana-artdeco.com | 0.98/10 | - | - | Dec 2023 |
| 1923 | ikeda-hamono.com | 0.10/10 | - | - | Nov 2021 |
| 1924 | ikemoto-shokuhin.com | 0.65/10 | - | - | Aug 2025 |
| 1925 | iki-omiyage.com | 0.14/10 | - | - | Sep 2022 |
| 1926 | iki-online.com | 0.60/10 | - | - | Jun 2024 |
| 1927 | ikiikioilcare.com | 0.97/10 | - | - | Sep 2023 |
| 1928 | iksus25.com | 0.28/10 | - | - | Jun 2024 |
| 1929 | ikuno-books-shop.com | 0.28/10 | - | - | Nov 2021 |
| 1930 | ilcampodelcinabro.it | 0.35/10 | - | - | May 2024 |
| 1931 | ilcanticodellanatura.it | 2.31/10 | - | - | Sep 2025 |
| 1932 | ilconvento.com | 0.29/10 | - | - | Jun 2022 |
| 1933 | ilearning.pt | 1.63/10 | - | - | Feb 2023 |
| 1934 | ilk.k12.tr | 0.45/10 | - | - | Feb 2024 |
| 1935 | ilpunto.it | 3.10/10 | - | - | Apr 2022 |
| 1936 | ilsancristoforo.com | 0.60/10 | - | - | Nov 2021 |
| 1937 | iltabacchificio.com | 0.12/10 | - | - | Aug 2025 |
| 1938 | iluva.ee | 0.61/10 | - | - | Jul 2024 |
| 1939 | imaginaryforces.com | 4.72/10 | - | - | Nov 2021 |
| 1940 | imai-tosou.com | 0.28/10 | - | - | Jun 2023 |
| 1941 | imai-ya.com | 0.29/10 | - | - | Nov 2024 |
| 1942 | imaibag.com | 0.41/10 | - | - | May 2023 |
| 1943 | imc.vic.edu.au | 1.70/10 | - | - | Nov 2024 |
| 1944 | immobilier-castillon-devred.fr | 0.36/10 | - | - | Oct 2022 |
| 1945 | imo-pi-pi.com | 1.95/10 | - | - | Dec 2021 |
| 1946 | imofukudo.com | 1.12/10 | - | - | Oct 2022 |
| 1947 | imperatricesuites.com | 0.42/10 | - | - | Feb 2024 |
| 1948 | imperial.edu.pk | 1.66/10 | - | - | Sep 2023 |
| 1949 | imperialcollegeegypt.edu.eg | 0.28/10 | - | - | Jun 2025 |
| 1950 | impiana.com.my | 3.46/10 | - | - | Oct 2022 |
| 1951 | impianaseminyak.com | 1.43/10 | - | - | Oct 2022 |
| 1952 | impianaubud.com | 0.28/10 | - | - | Nov 2025 |
| 1953 | improve-ones-fitness.com | 1.17/10 | - | - | Aug 2024 |
| 1954 | imt.edu.ng | 1.93/10 | - | - | Jan 2025 |
| 1955 | in-struct.com | 0.43/10 | - | - | Sep 2024 |
| 1956 | inakanosen.com | 0.11/10 | - | - | Nov 2021 |
| 1957 | inasena.jp | 1.20/10 | - | - | Mar 2026 |
| 1958 | inceperu.com | 0.10/10 | - | - | May 2024 |
| 1959 | incolour.jp | 0.98/10 | - | - | Aug 2026 |
| 1960 | inctdd.org | 2.19/10 | - | - | Mar 2023 |
| 1961 | incubesens.com | 0.30/10 | - | - | Nov 2023 |
| 1962 | incurso.pt | 0.94/10 | - | - | Dec 2022 |
| 1963 | indigoinstruments.com | 2.56/10 | - | - | Nov 2021 |
| 1964 | indigovenice.com | 1.85/10 | - | - | Nov 2021 |
| 1965 | indigoverona.com | 2.19/10 | - | - | Nov 2021 |
| 1966 | induitschool.com | 0.10/10 | - | - | Feb 2026 |
| 1967 | infinitycarhire.com | 0.33/10 | - | - | Aug 2022 |
| 1968 | infinitycrest.co.jp | 1.77/10 | - | - | Dec 2025 |
| 1969 | ingatlansiofok.hu | 0.61/10 | - | - | Nov 2021 |
| 1970 | inomata-jewelry.com | 0.10/10 | - | - | Oct 2022 |
| 1971 | inorganic.jp | 1.61/10 | - | - | Mar 2023 |
| 1972 | inori-apparel.com | 0.36/10 | - | - | Jul 2025 |
| 1973 | insightfulpedslp.com | 0.10/10 | - | - | Jun 2025 |
| 1974 | institutfrancais-guinee.fr | 0.40/10 | - | - | May 2023 |
| 1975 | institutobatistacentral.com.br | - | - | - | Aug 2026 |
| 1976 | institutonova.edu.pe | 0.25/10 | - | - | Mar 2025 |
| 1977 | institutopenal.com | 0.30/10 | - | - | May 2026 |
| 1978 | institutovicentinos.org | 0.26/10 | - | - | Nov 2023 |
| 1979 | insuldiselts.ee | 1.72/10 | - | - | Jan 2024 |
| 1980 | integralschool.net | 0.42/10 | - | - | Mar 2026 |
| 1981 | inteligenes.com | 1.08/10 | - | - | Dec 2022 |
| 1982 | internationalhotel.it | 1.25/10 | - | - | Mar 2025 |
| 1983 | intersmartsolution.com | 3.66/10 | - | - | Nov 2021 |
| 1984 | intheblueshirt.com | 1.53/10 | - | - | Aug 2022 |
| 1985 | inuamazake.com | 0.28/10 | - | - | Aug 2026 |
| 1986 | iou-gqmc.com | 0.55/10 | - | - | Nov 2021 |
| 1987 | ippum.jp | 0.90/10 | - | - | Jul 2026 |
| 1988 | ipswedu.com | 0.10/10 | - | - | Apr 2025 |
| 1989 | iraninovin.net | 0.21/10 | - | - | Dec 2025 |
| 1990 | irefglobal.com | 0.10/10 | - | - | Aug 2022 |
| 1991 | iremono.shop | 0.11/10 | - | - | Oct 2021 |
| 1992 | iria.org.in | 3.05/10 | - | - | May 2022 |
| 1993 | iric.org | 2.83/10 | - | - | Nov 2023 |
| 1994 | irieyofficial.com | 0.12/10 | - | - | Dec 2021 |
| 1995 | irifunesushi.net | 1.77/10 | - | - | Jul 2022 |
| 1996 | iroe.net | 0.24/10 | - | - | Jun 2023 |
| 1997 | irosika.com | 0.10/10 | - | - | Jun 2025 |
| 1998 | is-tail.com | 0.43/10 | - | - | Aug 2022 |
| 1999 | isb.edu.bn | 2.02/10 | - | - | Mar 2024 |
| 2000 | isd-net.co.jp | 1.25/10 | - | - | Sep 2023 |
Open Page Rank is the domain's authority score (0 to 10, from the open web link graph); the list is ordered by it and covers sites seen in recent crawls. Visits and keywords are estimated US organic search figures.
Download top 10,000 as CSV (zip) →
Compare Intersection Observer
- Intersection Observer vs Priority Hints
- Intersection Observer vs Cloudflare Rocket Loader
- Intersection Observer vs Google Cloud Trace
- Intersection Observer vs Turbo
- Intersection Observer vs Cloudflare Zaraz