Websites Powered by Bootstrap
12,805,802 websites tracked using Bootstrap (UI frameworks) · getbootstrap.com
Bootstrap is an open-source CSS and JavaScript framework for building responsive, mobile-first websites. Created at Twitter, it provides a grid system, prebuilt components, and utility classes that speed up front-end development. It is one of the most common UI frameworks on the web and is detected from its distinctive class names and bundled assets.
Usage trend
2M
4M
6M
Apr 2018
May 2020
May 2022
Jun 2024
Jun 2026
Domains observed using Bootstrap in each month's HTTP Archive crawl,
Apr 2018 to Jun 2026 · peak 4,338,260 in Mar 2023. 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 3,639,966 Bootstrap sites with Chrome UX data, p75 values, Jun 2026.
Top countries
United States
886,770
India
429,293
Germany
322,762
United Kingdom
295,976
France
279,130
Brazil
273,285
Italy
251,088
Spain
202,979
Sites using Bootstrap by audience country, Chrome UX Report.
Top sites by authority
9+
48% · 180 of 372 sites
8+
50% · 3,860 of 7,677 sites
7+
42% · 18,993 of 45,712 sites
6+
37% · 40,203 of 110,136 sites
5+
30% · 74,817 of 246,751 sites
The share of the web's most authoritative domains, by Open Page Rank tier, seen running Bootstrap in recent crawls. Only 372 domains worldwide score 9 or higher.
Websites using Bootstrap
| # | Domain | Open Page RankOPR | Est. monthly visits (US)Visits (US) | Keywords | First seen |
|---|---|---|---|---|---|
| 101 | ietf.org | 9.09/10 | 23,000 | 5,477 | Aug 2018 |
| 102 | cloudinary.com | 9.09/10 | 93,500 | 30,227 | Jun 2018 |
| 103 | etsy.com | 9.09/10 | 22,475,200 | 11,513,779 | Jun 2018 |
| 104 | amazon.co.uk | 9.08/10 | 653,600 | 790,182 | Aug 2018 |
| 105 | usatoday.com | 9.08/10 | 10,803,700 | 3,413,388 | Aug 2018 |
| 106 | canada.ca | 9.08/10 | 2,129,800 | 995,010 | Aug 2018 |
| 107 | mhlw.go.jp | 9.08/10 | 15,300 | 12,761 | Aug 2018 |
| 108 | bls.gov | 9.08/10 | 4,335,300 | 639,170 | Dec 2019 |
| 109 | giphy.com | 9.07/10 | 8,743,600 | 2,542,358 | Aug 2018 |
| 110 | imgur.com | 9.07/10 | 850,200 | 760,773 | Aug 2018 |
| 111 | sagepub.com | 9.07/10 | 31,500 | 2,940 | Jun 2018 |
| 112 | time.com | 9.07/10 | 2,628,400 | 1,039,492 | Aug 2018 |
| 113 | apa.org | 9.07/10 | 1,040,700 | 238,370 | Aug 2018 |
| 114 | state.gov | 9.07/10 | 3,314,200 | 200,218 | Aug 2018 |
| 115 | noaa.gov | 9.07/10 | 1,258,800 | 144,262 | Aug 2018 |
| 116 | sourceforge.net | 9.06/10 | 1,301,600 | 345,637 | Aug 2018 |
| 117 | go.com | 9.06/10 | 134,400 | 715 | Jun 2018 |
| 118 | unesco.org | 9.06/10 | 294,400 | 71,304 | Apr 2018 |
| 119 | frontiersin.org | 9.06/10 | 869,400 | 706,983 | Apr 2018 |
| 120 | loc.gov | 9.06/10 | 1,940,600 | 291,331 | Aug 2018 |
| 121 | acm.org | 9.05/10 | 24,100 | 17,765 | Aug 2018 |
| 122 | vercel.app | 9.05/10 | - | - | Dec 2020 |
| 123 | tandfonline.com | 9.05/10 | 815,700 | 828,124 | Apr 2019 |
| 124 | worldbank.org | 9.05/10 | 711,400 | 193,830 | Jun 2018 |
| 125 | house.gov | 9.05/10 | 752,000 | 103,932 | Jun 2018 |
| 126 | free.fr | 9.05/10 | 3,400 | 1,262 | Apr 2018 |
| 127 | congress.gov | 9.05/10 | 3,391,600 | 637,051 | Dec 2018 |
| 128 | ed.gov | 9.05/10 | 1,229,500 | 99,935 | Apr 2018 |
| 129 | weibo.com | 9.04/10 | 1,200 | 638 | Aug 2018 |
| 130 | bizjournals.com | 9.04/10 | 814,500 | 869,896 | Feb 2021 |
| 131 | matomo.org | 9.04/10 | 10,500 | 5,264 | Feb 2019 |
| 132 | windows.net | 9.04/10 | - | - | Apr 2018 |
| 133 | wpengine.com | 9.04/10 | 66,500 | 17,967 | Aug 2018 |
| 134 | readthedocs.io | 9.04/10 | - | - | Aug 2018 |
| 135 | iso.org | 9.04/10 | 663,700 | 64,103 | Jun 2018 |
| 136 | msn.com | 9.04/10 | 7,859,900 | 2,516,504 | Aug 2018 |
| 137 | deloitte.com | 9.04/10 | 393,900 | 170,966 | Jun 2018 |
| 138 | telegraph.co.uk | 9.04/10 | 700,500 | 680,508 | Aug 2018 |
| 139 | cambridge.org | 9.04/10 | 633,100 | 518,312 | Aug 2018 |
| 140 | mayoclinic.org | 9.04/10 | 61,726,300 | 4,533,343 | Apr 2018 |
| 141 | sec.gov | 9.04/10 | 1,451,500 | 433,666 | Aug 2018 |
| 142 | ny.gov | 9.04/10 | 691,300 | 55,212 | Aug 2018 |
| 143 | justice.gov | 9.04/10 | 5,041,300 | 855,725 | Aug 2018 |
| 144 | census.gov | 9.04/10 | 1,526,700 | 227,460 | Apr 2018 |
| 145 | abc.net.au | 9.04/10 | 1,129,200 | 703,096 | Aug 2018 |
| 146 | cpanel.net | 9.03/10 | 20,300 | 4,682 | Aug 2018 |
| 147 | userway.org | 9.03/10 | 8,200 | 2,564 | Feb 2019 |
| 148 | python.org | 9.03/10 | 408,700 | 39,359 | Aug 2018 |
| 149 | oup.com | 9.03/10 | 570 | 405 | Aug 2018 |
| 150 | oecd.org | 9.03/10 | 369,300 | 169,314 | Apr 2018 |
| 151 | lemonde.fr | 9.03/10 | 267,300 | 164,559 | Aug 2018 |
| 152 | b-cdn.net | 9.02/10 | - | - | Dec 2020 |
| 153 | qualtrics.com | 9.02/10 | 359,600 | 56,890 | Jun 2018 |
| 154 | slack.com | 9.02/10 | 545,600 | 124,281 | Jun 2024 |
| 155 | gartner.com | 9.02/10 | 521,600 | 122,476 | Jun 2018 |
| 156 | mdpi.com | 9.02/10 | 1,843,600 | 1,928,740 | Mar 2023 |
| 157 | cbsnews.com | 9.02/10 | 11,302,100 | 4,702,401 | Jul 2023 |
| 158 | dhs.gov | 9.02/10 | 1,505,600 | 304,662 | Aug 2018 |
| 159 | ieee.org | 9.02/10 | 37,200 | 20,161 | Aug 2018 |
| 160 | columbia.edu | 9.02/10 | 770,900 | 41,349 | Jun 2018 |
| 161 | senate.gov | 9.02/10 | 1,931,200 | 175,699 | Aug 2018 |
| 162 | nps.gov | 9.02/10 | 23,101,200 | 1,958,815 | Jun 2018 |
| 163 | leadconnectorhq.com | 9.01/10 | 220 | 108 | Dec 2025 |
| 164 | atlassian.com | 9.01/10 | 1,053,700 | 178,447 | Aug 2018 |
| 165 | netlify.app | 9.01/10 | 2 | 2 | Jun 2020 |
| 166 | unicef.org | 9.01/10 | 286,700 | 135,578 | Jun 2018 |
| 167 | arcgis.com | 9.01/10 | 958,800 | 298,101 | Aug 2018 |
| 168 | bbb.org | 9.01/10 | 8,953,200 | 3,866,716 | Feb 2020 |
| 169 | latimes.com | 9.01/10 | 3,917,700 | 1,979,297 | Jun 2018 |
| 170 | psu.edu | 9.01/10 | 581,600 | 94,595 | Aug 2018 |
| 171 | umich.edu | 9.01/10 | 36,500 | 1,974 | Aug 2018 |
| 172 | yale.edu | 9.01/10 | 177,900 | 6,885 | Aug 2018 |
| 173 | pbs.org | 9.01/10 | 10,732,500 | 2,329,939 | Mar 2020 |
| 174 | gitlab.com | 9.00/10 | 87,500 | 29,195 | Apr 2018 |
| 175 | uk.com | 9.00/10 | 2 | 12 | Apr 2018 |
| 176 | cnet.com | 9.00/10 | 6,706,300 | 2,666,781 | Aug 2018 |
| 177 | psychologytoday.com | 9.00/10 | 3,370,000 | 1,004,559 | Apr 2018 |
| 178 | upenn.edu | 9.00/10 | 179,200 | 5,457 | Aug 2018 |
| 179 | dol.gov | 9.00/10 | 2,744,400 | 631,787 | Apr 2018 |
| 180 | energy.gov | 9.00/10 | 1,887,700 | 301,694 | Aug 2018 |
| 181 | icann.org | 8.99/10 | 27,800 | 9,274 | Jan 2019 |
| 182 | naver.com | 8.99/10 | 47,500 | 134 | Aug 2018 |
| 183 | patreon.com | 8.99/10 | 965,100 | 442,272 | Aug 2018 |
| 184 | square.site | 8.99/10 | 92,700 | 37,752 | May 2020 |
| 185 | goodreads.com | 8.99/10 | 17,099,600 | 3,309,810 | Jul 2019 |
| 186 | service.gov.uk | 8.99/10 | - | - | Aug 2018 |
| 187 | amazon.fr | 8.99/10 | 48,300 | 65,742 | Sep 2018 |
| 188 | archives.gov | 8.99/10 | 3,336,000 | 450,906 | Jun 2018 |
| 189 | va.gov | 8.99/10 | 3,933,900 | 1,032,734 | Apr 2018 |
| 190 | academia.edu | 8.99/10 | 199,400 | 452,382 | Jun 2018 |
| 191 | mail.ru | 8.98/10 | 1,700 | 37 | Aug 2018 |
| 192 | ohchr.org | 8.98/10 | 379,200 | 109,533 | Apr 2019 |
| 193 | marriott.com | 8.98/10 | 13,740,800 | 1,485,399 | Apr 2018 |
| 194 | constantcontact.com | 8.98/10 | 48,700 | 22,287 | Apr 2018 |
| 195 | ox.ac.uk | 8.98/10 | 214,200 | 93,016 | Aug 2018 |
| 196 | princeton.edu | 8.98/10 | 246,800 | 50,700 | Aug 2018 |
| 197 | jstor.org | 8.98/10 | 765,500 | 767,907 | Apr 2019 |
| 198 | treasury.gov | 8.98/10 | 32,100 | 73,228 | Aug 2018 |
| 199 | texas.gov | 8.98/10 | 856,400 | 43,777 | Aug 2018 |
| 200 | nhk.or.jp | 8.98/10 | 2,800 | 716 | Aug 2018 |
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) →
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