JS libraries impact: 21 providers ranked | The State of Web Vitals 2026

1

At a glance the headline numbers for JS libraries impact

Performance impact by framework provider.

21

Providers ranked

After min-sites filter

272,218

Sites in sample

Combined across all items

1.7s

Best LCP (p75)

Turbo/Hotwire

The State of Web Vitals · Q2 2026 · 189,915 sites · phone field datacorewebvitals.io/state-of-cwv

2

The ranking sorted by LCP at p75, fastest first

#	Provider	LCP p75	Passing	Sites
1	Turbo/Hotwire	1.7s	92.0%	520
2	Stimulus/Hotwire	2.0s	87.8%	3,021
3	Polyfill.io	2.2s	83.0%	88
4	Slick Carousel	2.3s	80.6%	14,369
5	jQuery	2.3s	80.1%	129,336
6	Flickity	2.3s	80.0%	5,509
7	Owl Carousel	2.3s	79.2%	8,206
8	Next.js	2.3s	79.7%	3,970
9	Lodash	2.4s	77.9%	25,401
10	Lazysizes	2.4s	78.7%	12,984
11	React	2.4s	77.6%	448
12	Vue.js	2.5s	75.6%	10,724
13	Moment.js	2.5s	75.2%	7,670
14	Ember.js	2.5s	74.4%	114
15	Lit	2.5s	74.4%	10,260
16	Swiper	2.6s	73.9%	29,806
17	GSAP	2.6s	72.2%	4,918
18	Nuxt	2.7s	70.2%	1,199
19	Backbone.js	2.8s	66.9%	1,540
20	Angular	3.1s	59.2%	1,908
21	Ionic	3.9s	42.9%	227

The State of Web Vitals · Q2 2026 · 189,915 sites · phone field datacorewebvitals.io/state-of-cwv

3

Passing LCP per provider which group passes the LCP most often

ProviderSitesPassing LCPp75

Polymer 0% 17 100% 2.0s

Turbo/Hotwire 0.3% 520 92% 1.7s

Stimulus/Hotwire 1.6% 3,021 88% 2.0s

Polyfill.io 0% 88 83% 2.2s

Slick Carousel 7.6% 14,369 81% 2.3s

jQuery 68.1% 129,336 80% 2.3s

Flickity 2.9% 5,509 80% 2.3s

Next.js 2.1% 3,970 80% 2.3s

Owl Carousel 4.3% 8,206 79% 2.3s

lazysizes 6.8% 12,984 79% 2.4s

Lodash 13.4% 25,401 78% 2.4s

React 0.2% 448 78% 2.4s

Vue.js 5.6% 10,724 76% 2.5s

Moment.js 4% 7,670 75% 2.5s

Ember.js 0.1% 114 74% 2.5s

Lit 5.4% 10,260 74% 2.5s

Swiper 15.7% 29,806 74% 2.6s

GSAP 2.6% 4,918 72% 2.6s

Nuxt.js 0.6% 1,199 70% 2.7s

Backbone.js 0.8% 1,540 67% 2.8s

Angular 1% 1,908 59% 3.1s

Marko 0% 20 58% 3.1s

Ionic 0.1% 227 43% 3.9s

Good Needs Improvement Poor Sorted best-passing first · median colored by its own rating · pass = good LCP (2.5s at p75) · one value per site

92% of Turbo/Hotwire sites pass LCP. Ionic trails 49 points behind, leaving 57% of its sites failing. computed

The State of Web Vitals · Q2 2026 · 189,915 sites · phone field datacorewebvitals.io/state-of-cwv

4

All five vitals at once the whole category without toggling - cell is the pass rate, small number the p75

LCP

INP

CLS

FCP

TTFB

jQuery 68.1%

802.3s

95121ms

900.02

721.9s

521.3s

Swiper 15.7%

742.6s

94129ms

890.02

662.1s

471.5s

Lodash 13.4%

782.4s

93126ms

870.03

721.9s

601.3s

Slick Carousel 7.6%

812.3s

94128ms

870.03

741.8s

531.2s

lazysizes 6.8%

792.4s

93131ms

880.03

721.9s

521.3s

Vue.js 5.6%

762.5s

92144ms

840.04

692.0s

531.3s

Lit 5.4%

742.5s

90141ms

840.04

692.0s

561.3s

Owl Carousel 4.3%

792.3s

96120ms

840.05

731.9s

501.3s

Moment.js 4%

752.5s

91136ms

850.04

692.0s

521.4s

Flickity 2.9%

802.3s

96128ms

910.01

731.9s

571.3s

GSAP 2.6%

722.6s

97122ms

890.02

652.1s

451.6s

Next.js 2.1%

802.3s

71216ms

750.10

791.7s

70878ms

Stimulus/Hotwire 1.6%

882.0s

96121ms

920.02

841.6s

77770ms

Angular 1%

593.1s

75201ms

520.32

642.1s

79711ms

Backbone.js 0.8%

672.8s

92134ms

840.04

582.3s

401.6s

Nuxt.js 0.6%

702.7s

85172ms

720.12

691.9s

611.0s

Turbo/Hotwire 0.3%

921.7s

90161ms

950.01

861.4s

72831ms

React 0.2%

782.4s

72231ms

700.16

731.8s

461.2s

Ionic 0.1%

433.9s

82182ms

560.25

372.7s

69966ms

Ember.js 0.1%

742.5s

78161ms

740.12

722.0s

671.0s

Polyfill.io 0%

832.2s

93131ms

870.01

731.9s

631.1s

Marko 0%

583.1s

84175ms

900.10

422.9s

112.3s

Polymer 0%

1002.0s

67470ms

700.15

901.3s

80759ms

60%95%+ passing Cell: pass rate, small number = p75 · faded rows: under 100 sites

One row per provider, one column per vital - the cell is the share of sites passing, the small number the p75. No toggling needed to see where the category actually differs.

Turbo/Hotwire leads on LCP: 92% of its sites pass. Ionic trails at 43%. computed

The State of Web Vitals · Q2 2026 · 189,915 sites · phone field datacorewebvitals.io/state-of-cwv