Bootstrap on new websites

1. About 1 in 25 websites that went live in the last 30 days were built with Bootstrap (3.7%).^[1]
2. It is the second most common CSS framework on new sites. Tailwind CSS appears on about 6 times as many.
3. Six in ten new Bootstrap sites also use jQuery.
4. It is unusually common on .in domains: 7.7% of the domains running it, against 3.6% of domains across new sites.

The line is the 7-day average share of new sites that use Bootstrap, since 10 September.

#	Movement	Tool	Share of all sites	Share of category[4]	Bar
1	–	Tailwind CSS	24.5%	86.3%
2	–	Bootstrap	4.3%	15.1%
3	–	UIkit	0.1%	0.4%
4	–	Layui	<0.1%	0.1%
5	▲2	Foundation	<0.1%	<0.1%

All-time shares across the new sites we track: of all of them, and of the sites using any CSS Framework tool. All 32 in CSS Framework

Tool	Sites with both	vs all new sites	Bar
jsDelivr	85,148	7.6x
Font Awesome	92,806	5.5x
jQuery	161,962	4.5x
PHP	123,308	2.9x
WordPress	68,128	2.1x

Tools that turn up far more often on Bootstrap sites than on new sites in general, and how many times as common each one is there.

9,055 of the 257,111 sites using Bootstrap are product launches we list individually. The other 248,056 are new business and personal sites: they count towards the figures above but are not listed here. A watch sends them to you.

Site	Found	Also detected
SignalPost — Find your next good post signal-post.app · Marketing	Oct 19
LeagueRoots | Registration software for youth sports community organizations leagueroots.com	Oct 19
Hutere – aplikacja mobilna do finansów osobistych i budżetu domowego hutere.com · Poland	Oct 19
Pakuci – aplikacja mobilna do kontroli wydatków w Gdańsku pakuci.com · Poland	Oct 19
Wobaje – aplikacja mobilna do kontroli wydatków wobaje.com · Poland	Oct 19
Duwoxe – aplikacja mobilna do finansów osobistych duwoxe.com · Poland	Oct 19
Bixemu – aplikacja mobilna Budżet Rodzinny do planowania wydatków bixemu.com · Poland	Oct 19
Fanija – aplikacja Budżet Rodzinny, Warszawa faniji.com · Poland	Oct 19
Nenago – aplikacja Family Budget na budżet domowy nenago.com · Poland	Oct 19
NovaFolio Studio — Le portfolio intuitif pour artistes et créateurs novafolio-studio.com · Design	Oct 19
BsonLite - Portable Database bsonlite.com · Developer Tools	Oct 19
Markaz Ilm — Connecting Scholars, Masjids & Families markazeilm.com	Oct 19

Showing the most recent 12 of 9,055.

Watches, exports and the API give you all 257,111 sites using Bootstrap, from £15 a month.

1. These figures cover websites that went live since April 2026, not the web as a whole.
2. Country comes from what each site says about itself, such as a company registration, legal terms or a phone number, not just its domain ending. Too few sites state their country plainly for the usual count, so this one also counts single signals: a country domain ending, a phone number (for North America, its area code), a location the site declares in its own page metadata, or a country-specific vendor stack and the page language where they agree and nothing contradicts them. Read these as likely rather than certain.
3. Green hosting is the share whose web host The Green Web Foundation lists as running on green energy, among sites checked since 1 April 2026, against the same share for every new site we checked over that time. Data from The Green Web Foundation.
4. Some products people expect to see here are filed under a related category: UI Library.