Websites Powered by Intersection Observer
15,614 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
Apr 2024
Jul 2025
Oct 2026
Domains observed using Intersection Observer in each month's HTTP Archive crawl,
Oct 2021 to Oct 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 6,123 Intersection Observer sites with Chrome UX data, p75 values, Sep 2026.
Top countries
Japan
3,623
India
491
United States
491
France
394
Italy
321
United Kingdom
302
Germany
278
Indonesia
254
Sites using Intersection Observer by audience country, Chrome UX Report.
Usage by industry
| Industry | Share | Websites |
|---|---|---|
| Travel and hospitality | 0.21% | 182 |
| Education | 0.12% | 78 |
| Pets and animals | 0.09% | 3 |
| Legal | 0.05% | 13 |
| Home and construction | 0.03% | 17 |
| Healthcare | 0.03% | 32 |
| Arts and entertainment | 0.02% | 11 |
| Beauty and wellness | 0.02% | 6 |
| Sports and fitness | 0.02% | 4 |
| News and media | 0.01% | 6 |
| Blogs and publishing | 0.01% | 3 |
| Retail | 0.01% | 37 |
Share of each industry's websites with a detected stack that use Intersection Observer; industries come from what sites declare in their own structured data.
Top sites by authority
9+
<1% · 2 of 372 sites
8+
<1% · 22 of 7,677 sites
7+
<1% · 60 of 45,712 sites
6+
<1% · 90 of 110,136 sites
5+
<1% · 143 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 |
|---|---|---|---|---|---|
| 1 | myshopify.com | 9.12/10 | - | - | May 2022 |
| 2 | upenn.edu | 9.00/10 | 178,900 | 4,794 | Jul 2026 |
| 3 | thebase.in | 8.72/10 | - | 1 | Oct 2021 |
| 4 | u-tokyo.ac.jp | 8.71/10 | 25,200 | 7,795 | Aug 2022 |
| 5 | hku.hk | 8.70/10 | 6,000 | 1,100 | Dec 2023 |
| 6 | accor.com | 8.55/10 | - | - | Sep 2024 |
| 7 | jp.net | 8.52/10 | 66 | 7 | Aug 2022 |
| 8 | theshop.jp | 8.52/10 | - | - | Oct 2021 |
| 9 | official.ec | 8.51/10 | - | - | Oct 2021 |
| 10 | base.shop | 8.50/10 | - | - | Oct 2021 |
| 11 | hostingersite.com | 8.49/10 | - | - | Aug 2026 |
| 12 | poznan.pl | 8.47/10 | 320 | 564 | Feb 2026 |
| 13 | jpn.com | 8.36/10 | - | - | Apr 2023 |
| 14 | unimi.it | 8.35/10 | 3,300 | 3,182 | Oct 2025 |
| 15 | udc.es | 8.29/10 | 280 | 628 | Oct 2023 |
| 16 | ou.edu | 8.27/10 | 392,000 | 52,695 | Jan 2025 |
| 17 | ig.com.br | 8.27/10 | 17 | 58 | Oct 2021 |
| 18 | auth.gr | 8.11/10 | 1,900 | 302 | Apr 2022 |
| 19 | snu.ac.kr | 8.09/10 | 69 | 64 | Feb 2025 |
| 20 | notaires.fr | 8.04/10 | 4,000 | 1,452 | Mar 2022 |
| 21 | ufba.br | 8.04/10 | 99 | 104 | Nov 2023 |
| 22 | ui.ac.id | 8.04/10 | 190 | 21 | Jan 2024 |
| 23 | chula.ac.th | 7.99/10 | 5,600 | 2,737 | May 2024 |
| 24 | bbva.com | 7.94/10 | 75,200 | 26,644 | Nov 2021 |
| 25 | pw.edu.pl | 7.90/10 | 95 | 170 | May 2023 |
| 26 | buyshop.jp | 7.85/10 | - | - | Oct 2021 |
| 27 | sch.gr | 7.84/10 | 12 | 33 | Jan 2024 |
| 28 | takaratomy.co.jp | 7.78/10 | 6,200 | 4,399 | Nov 2021 |
| 29 | uoc.gr | 7.73/10 | 44 | 79 | Sep 2024 |
| 30 | larepublica.pe | 7.72/10 | 19,000 | 52,740 | Nov 2021 |
| 31 | okinawatimes.co.jp | 7.68/10 | 200 | 308 | Aug 2024 |
| 32 | persol-group.co.jp | 7.66/10 | 41 | 17 | Nov 2021 |
| 33 | spri.ng | 7.62/10 | 7,300 | 2,805 | Feb 2022 |
| 34 | goout.net | 7.57/10 | 6,500 | 5,677 | Mar 2024 |
| 35 | base.ec | 7.54/10 | - | - | Oct 2021 |
| 36 | cma.ca | 7.54/10 | 9,100 | 4,034 | Sep 2025 |
| 37 | uth.gr | 7.50/10 | 190 | 76 | Feb 2024 |
| 38 | voog.com | 7.46/10 | 170 | 306 | Nov 2022 |
| 39 | unibuc.ro | 7.46/10 | 1,600 | 506 | Aug 2022 |
| 40 | uni-sb.de | 7.45/10 | - | 1 | May 2023 |
| 41 | tokyo-sports.co.jp | 7.39/10 | 27 | 55 | May 2023 |
| 42 | kemendikdasmen.go.id | 7.38/10 | 60 | 213 | Jan 2026 |
| 43 | metromadrid.es | 7.36/10 | 14,000 | 11,390 | Nov 2024 |
| 44 | thememove.com | 7.28/10 | 20 | 70 | Oct 2021 |
| 45 | fastlane.tools | 7.25/10 | 210 | 576 | Oct 2021 |
| 46 | edu.gm | 7.23/10 | - | - | Apr 2023 |
| 47 | persol-career.co.jp | 7.22/10 | 11 | 4 | Apr 2026 |
| 48 | lynchburg.edu | 7.21/10 | 37,800 | 9,112 | Feb 2025 |
| 49 | tiermaker.com | 7.19/10 | 501,800 | 110,712 | Oct 2021 |
| 50 | handcrafted.jp | 7.11/10 | - | - | Oct 2021 |
| 51 | unipi.gr | 7.09/10 | 120 | 66 | Nov 2021 |
| 52 | unri.ac.id | 7.06/10 | 120 | 89 | Nov 2023 |
| 53 | crowneplaza.com | 7.05/10 | 54 | 63 | Jan 2025 |
| 54 | shopselect.net | 7.02/10 | - | - | Oct 2021 |
| 55 | vistage.com | 7.02/10 | 10,300 | 4,450 | Aug 2022 |
| 56 | ukim.edu.mk | 7.02/10 | 33 | 13 | Nov 2023 |
| 57 | fashionstore.jp | 7.02/10 | - | - | Oct 2021 |
| 58 | edu.eu | 7.02/10 | - | - | Nov 2022 |
| 59 | toyoko-inn.com | 7.00/10 | 13,500 | 4,607 | May 2023 |
| 60 | tartu.ee | 7.00/10 | 14 | 52 | Nov 2024 |
| 61 | bayer04.de | 6.98/10 | 15,300 | 2,183 | Oct 2022 |
| 62 | jgu.edu.in | 6.97/10 | 11,600 | 3,945 | Sep 2023 |
| 63 | newstank.fr | 6.93/10 | 1 | 1 | Oct 2021 |
| 64 | brockport.edu | 6.91/10 | 62,900 | 13,218 | Jul 2023 |
| 65 | utalca.cl | 6.89/10 | 78 | 291 | Dec 2024 |
| 66 | washington-hotels.jp | 6.85/10 | 150 | 64 | Aug 2026 |
| 67 | atauni.edu.tr | 6.79/10 | 600 | 260 | Nov 2022 |
| 68 | ous.ac.jp | 6.79/10 | 32 | 20 | May 2024 |
| 69 | fontlab.com | 6.78/10 | 1,300 | 518 | Nov 2021 |
| 70 | siit.co | 6.78/10 | 6,200 | 9,479 | Jan 2026 |
| 71 | sagamiko-resort.jp | 6.78/10 | 44 | 33 | Jul 2024 |
| 72 | careercontessa.com | 6.69/10 | 24,300 | 19,324 | Oct 2021 |
| 73 | unibl.org | 6.66/10 | 28 | 21 | Sep 2023 |
| 74 | kawaiishop.jp | 6.65/10 | - | - | Oct 2021 |
| 75 | unja.ac.id | 6.64/10 | 65 | 94 | Aug 2022 |
| 76 | uowm.gr | 6.63/10 | 37 | 30 | May 2024 |
| 77 | ues.edu.sv | 6.63/10 | 1,500 | 621 | Aug 2024 |
| 78 | secretlab.co | 6.51/10 | 127,400 | 35,673 | Nov 2021 |
| 79 | oauife.edu.ng | 6.51/10 | 770 | 407 | Feb 2023 |
| 80 | uca.ma | 6.46/10 | 200 | 119 | Nov 2024 |
| 81 | uta.edu.ec | 6.32/10 | 66 | 76 | May 2025 |
| 82 | uoradea.ro | 6.30/10 | 41 | 33 | May 2025 |
| 83 | hotelkeihan.co.jp | 6.29/10 | 140 | 35 | Sep 2025 |
| 84 | agentimage.com | 6.28/10 | 1,300 | 601 | Mar 2025 |
| 85 | ltu.bg | 6.28/10 | 1 | 9 | Feb 2026 |
| 86 | ayersrockresort.com.au | 6.25/10 | 8,900 | 1,193 | Nov 2021 |
| 87 | theskydeck.com | 6.16/10 | 136,200 | 9,538 | May 2024 |
| 88 | hacklinkmarket.com | 6.09/10 | - | - | Jul 2026 |
| 89 | neu.edu.vn | 6.02/10 | 110 | 139 | Mar 2025 |
| 90 | dgp-schueler.de | 6.02/10 | 1 | 1 | Sep 2023 |
| 91 | aiu.edu | 5.98/10 | 12,000 | 8,871 | Feb 2023 |
| 92 | ucm.ac.mz | 5.96/10 | 41 | 86 | Jul 2026 |
| 93 | vanyaland.com | 5.92/10 | 10,500 | 13,307 | Nov 2021 |
| 94 | iwsc.net | 5.92/10 | 1,200 | 1,361 | Nov 2021 |
| 95 | bima.co.uk | 5.81/10 | 36 | 206 | Nov 2021 |
| 96 | macnet.ca | 5.80/10 | 61 | 94 | May 2023 |
| 97 | muc-off.com | 5.75/10 | 600 | 1,165 | Nov 2021 |
| 98 | uinsaizu.ac.id | 5.75/10 | - | 1 | May 2024 |
| 99 | esj-lille.fr | 5.72/10 | - | - | May 2023 |
| 100 | untz.ba | 5.68/10 | 31 | 44 | Oct 2024 |
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) →
Columns: domain, Open Page Rank, first seen, last seen, industry (from the site's own structured data, blank when none).
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