JavaScript libraries market share in the UK

Libraries loaded on the homepage.

#	Technology	United Kingdom	Global	Netherlands	Italy	Spain	Japan	Latin America
1	jQuery	41%	35%	33%	47%	47%	65%	46%
2	core-js	17%	11%	15%	23%	19%	11%	22%
3	jQuery Migrate	16%	9.7%	12%	22%	18%	13%	20%
4	Swiper	11%	12%	13%	19%	16%	21%	19%
5	Slick	6.7%	5.1%	3.5%	7.4%	8%	26%	8.4%
6	Modernizr	4.8%	2.7%	2.4%	5.7%	4%	3.4%	3.7%
7	jQuery UI	4.7%	3.1%	3%	7.2%	8.2%	5.3%	4.4%
8	Owl Carousel	4.5%	3.1%	2.5%	7.8%	7.4%	1.2%	7.8%
9	webpack	3.4%	2.3%	1.9%	1.4%	1.7%	0.9%	2.3%
10	Alpine.js	3.1%	1.5%	4.7%	2.3%	1.5%	0.4%	1.1%
11	lazysizes	2.2%	1.8%	1.4%	2.9%	2.2%	3.8%	3.5%
12	RequireJS	2%	0.5%	1.6%	1.5%	1.2%	0.2%	1.4%
13	GSAP	1.3%	1.8%	0.9%	1.8%	1.6%	2.8%	1.5%
14	Vite	0.7%	2.1%	0.8%	0.8%	0.6%	0.6%	2.3%
15	Lottie	0.7%	1%	0.5%	1.1%	1.4%	0.4%	0.8%
16	Hotwire (Turbo / Stimulus)	0.4%	0.6%	0.8%	0.6%	0.7%	0.3%	0.5%
17	Lodash	0.4%	0.4%	0.3%	0.6%	0.5%	0.5%	0.7%
18	htmx	0.3%	0.2%	0.4%	0.2%	<0.1%	<0.1%	0.2%
19	Polyfill.io (compromised CDN)	<0.1%	<0.1%	0.1%	<0.1%	<0.1%	<0.1%	<0.1%
20	three.js	<0.1%	<0.1%	<0.1%	<0.1%	<0.1%	0.2%	<0.1%

By site popularity

Share of measured sites in each Tranco popularity band that use the technology: the top 1,000, 10,000 and 100,000 sites and the whole top million.

#	Technology	Top 10K	Top 100K	Top 1M
1	jQuery	15%	35%	41%
2	webpack	6.7%	6.1%	3.4%
3	core-js	5%	8.5%	17%
4	Modernizr	5%	5.4%	4.8%
5	jQuery Migrate	3.3%	8.7%	16%
6	Swiper	3.3%	8.9%	11%
7	Slick	3.3%	3.7%	6.7%
8	GSAP	3.3%	1%	1.3%
9	jQuery UI	1.7%	3%	4.7%
10	Hotwire (Turbo / Stimulus)	1.7%	0.7%	0.4%
11	Polyfill.io (compromised CDN)	1.7%	0.1%	<0.1%
12	Owl Carousel	0%	1.6%	4.5%
13	Alpine.js	0%	3.4%	3.1%
14	lazysizes	0%	1.9%	2.2%
15	RequireJS	0%	0.7%	2%
16	Vite	0%	0.7%	0.7%
17	Lottie	0%	0.1%	0.7%
18	Lodash	0%	0.3%	0.4%
19	htmx	0%	0.2%	0.3%
20	three.js	0%	0%	<0.1%
	Sites measured	60	886	11,322

Popular sites vs local business websites

Popular: sites of United Kingdom from the Tranco top million. Local business: websites of companies with 1–20 locations in the country, taken from a business places directory (platforms, marketplaces and aggregators excluded).

#	Technology	Popular sites	Local business	Difference, pp
	Any JavaScript libraries	54%	68%	+14.5
1	jQuery	41%	49%	+8
2	core-js	17%	45%	+28.6
3	jQuery Migrate	16%	31%	+15.5
4	Swiper	11%	13%	+2.6
5	webpack	3.4%	12%	+8.8
6	Lodash	0.4%	11%	+11
7	Slick	6.7%	5.3%	−1.4
8	Owl Carousel	4.5%	5.1%	+0.6
9	Modernizr	4.8%	4.4%	−0.4
10	jQuery UI	4.7%	2.7%	−2
11	Vite	0.7%	2.5%	+1.8
12	lazysizes	2.2%	2.1%	−0.1
13	GSAP	1.3%	1.9%	+0.5
14	Alpine.js	3.1%	0.8%	−2.4
15	Hotwire (Turbo / Stimulus)	0.4%	0.6%	+0.2
	Sites measured	11,322	20,305

Our crawler: 11,322 sites · United Kingdom · updated 13 Nov 2026 · Methodology