JavaScript libraries market share in the UK

Libraries loaded on the homepage.

#	Technology	United Kingdom	Global	Netherlands	Italy	Spain	Japan	Latin America
1	jQuery	42%	35%	35%	47%	46%	63%	47%
2	core-js	17%	11%	17%	23%	18%	11%	22%
3	jQuery Migrate	16%	9.7%	13%	21%	17%	12%	20%
4	Swiper	12%	12%	14%	19%	17%	21%	19%
5	Slick	6.7%	5.1%	3.9%	7.4%	8%	24%	9.5%
6	Modernizr	4.8%	2.7%	2.8%	5.2%	4.2%	3.1%	3.8%
7	Owl Carousel	4.5%	3.2%	3.1%	7.7%	7%	1.2%	8.1%
8	jQuery UI	4.5%	3.3%	3.3%	7.5%	8.2%	5.2%	4.4%
9	webpack	3.8%	2.4%	1.8%	1.3%	1.7%	0.8%	2.2%
10	Alpine.js	3.1%	1.5%	4.9%	2.3%	1.4%	0.4%	1.1%
11	lazysizes	2.4%	1.9%	1.7%	3.2%	2.4%	4%	3.8%
12	RequireJS	2.1%	0.6%	1.8%	1.4%	1.1%	0.2%	1.3%
13	GSAP	1.4%	1.8%	1.1%	1.9%	1.4%	2.6%	1.5%
14	Vite	0.8%	2%	0.9%	0.7%	0.8%	0.6%	2%
15	Lottie	0.7%	0.9%	0.5%	1%	1.9%	0.4%	0.7%
16	Hotwire (Turbo / Stimulus)	0.4%	0.5%	0.7%	0.6%	0.6%	0.2%	0.5%
17	Lodash	0.4%	0.4%	0.2%	0.6%	0.4%	0.4%	0.7%
18	htmx	0.3%	0.2%	0.4%	0.2%	<0.1%	<0.1%	0.2%
19	Polyfill.io (compromised CDN)	0.2%	<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	14%	34%	42%
2	Swiper	3%	8.5%	12%
3	Slick	3%	4.6%	6.7%
4	webpack	3%	7.2%	3.8%
5	GSAP	3%	1.3%	1.4%
6	core-js	1.5%	7.7%	17%
7	jQuery Migrate	1.5%	8.7%	16%
8	Modernizr	1.5%	5%	4.8%
9	jQuery UI	1.5%	3.3%	4.5%
10	Hotwire (Turbo / Stimulus)	1.5%	0.6%	0.4%
11	Polyfill.io (compromised CDN)	1.5%	0.1%	0.2%
12	Owl Carousel	0%	2.1%	4.5%
13	Alpine.js	0%	3.3%	3.1%
14	lazysizes	0%	1.6%	2.4%
15	RequireJS	0%	1%	2.1%
16	Vite	0%	0.9%	0.8%
17	Lottie	0%	0.4%	0.7%
18	Lodash	0%	0.1%	0.4%
19	htmx	0%	0.2%	0.3%
20	three.js	0%	0%	<0.1%
	Sites measured	66	931	11,909

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	56%	64%	+8.4
1	jQuery	42%	45%	+3.3
2	core-js	17%	42%	+24.6
3	jQuery Migrate	16%	28%	+12
4	Swiper	12%	12%	+0.7
5	webpack	3.8%	12%	+8.1
6	Lodash	0.4%	11%	+10.8
7	Slick	6.7%	4.9%	−1.8
8	Owl Carousel	4.5%	4.8%	+0.2
9	Modernizr	4.8%	4.1%	−0.7
10	Vite	0.8%	2.3%	+1.5
11	jQuery UI	4.5%	2.2%	−2.2
12	GSAP	1.4%	1.7%	+0.3
13	lazysizes	2.4%	1.7%	−0.8
14	Alpine.js	3.1%	0.8%	−2.3
15	Hotwire (Turbo / Stimulus)	0.4%	0.6%	+0.2
	Sites measured	11,909	21,114

Our crawler: 11,909 sites · United Kingdom · updated 23 Oct 2026 · Methodology