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

0.02

Best CLS (p75)

Turbo/Hotwire

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

2

The ranking sorted by CLS at p75, fastest first

#	Provider	CLS p75	Passing	Sites
1	Turbo/Hotwire	0.02	95.3%	520
2	Polyfill.io	0.02	85.1%	88
3	Flickity	0.03	90.1%	5,509
4	Lodash	0.04	86.3%	25,401
5	GSAP	0.04	89.0%	4,918
6	jQuery	0.04	88.3%	129,336
7	Stimulus/Hotwire	0.04	90.9%	3,021
8	Swiper	0.04	88.1%	29,806
9	Slick Carousel	0.05	84.7%	14,369
10	Lazysizes	0.05	86.6%	12,984
11	Moment.js	0.06	82.3%	7,670
12	Lit	0.06	83.2%	10,260
13	Vue.js	0.06	83.1%	10,724
14	Backbone.js	0.07	81.8%	1,540
15	Owl Carousel	0.07	81.3%	8,206
16	Ember.js	0.09	77.8%	114
17	Next.js	0.10	76.1%	3,970
18	Nuxt	0.14	69.2%	1,199
19	React	0.16	70.1%	448
20	Ionic	0.20	60.8%	227
21	Angular	0.30	49.7%	1,908

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

3

Passing CLS per provider which group passes the CLS most often

ProviderSitesPassing CLSp75

Turbo/Hotwire 0.3% 520 95% 0.02

Stimulus/Hotwire 1.6% 3,021 91% 0.04

Flickity 2.9% 5,509 90% 0.03

GSAP 2.6% 4,918 89% 0.04

jQuery 68.1% 129,336 88% 0.04

Swiper 15.7% 29,806 88% 0.04

lazysizes 6.8% 12,984 87% 0.05

Lodash 13.4% 25,401 86% 0.04

Polyfill.io 0% 88 85% 0.02

Marko 0% 20 85% 0.10

Slick Carousel 7.6% 14,369 85% 0.05

Lit 5.4% 10,260 83% 0.06

Vue.js 5.6% 10,724 83% 0.06

Polymer 0% 17 82% 0.01

Moment.js 4% 7,670 82% 0.06

Backbone.js 0.8% 1,540 82% 0.07

Owl Carousel 4.3% 8,206 81% 0.07

Ember.js 0.1% 114 78% 0.09

Next.js 2.1% 3,970 76% 0.10

React 0.2% 448 70% 0.16

Nuxt.js 0.6% 1,199 69% 0.14

Ionic 0.1% 227 61% 0.20

Angular 1% 1,908 50% 0.30

Good Needs Improvement Poor Sorted best-passing first · median colored by its own rating · pass = good CLS (0.1 at p75) · one value per site

95% of Turbo/Hotwire sites pass CLS. Angular trails 45 points behind, leaving 50% of its sites failing. computed

The State of Web Vitals · Q2 2026 · 189,915 sites · all devices 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%

812.3s

97104ms

880.04

731.9s

511.4s

Swiper 15.7%

742.5s

97111ms

880.04

672.1s

451.6s

Lodash 13.4%

782.3s

95106ms

860.04

731.9s

581.3s

Slick Carousel 7.6%

822.2s

96108ms

850.05

761.8s

541.3s

lazysizes 6.8%

792.3s

96113ms

870.05

721.9s

501.4s

Vue.js 5.6%

762.4s

95127ms

830.06

711.9s

521.4s

Lit 5.4%

772.4s

94120ms

830.06

721.9s

571.3s

Owl Carousel 4.3%

802.3s

98105ms

810.07

741.8s

501.3s

Moment.js 4%

752.5s

95119ms

820.06

682.0s

511.4s

Flickity 2.9%

792.3s

98113ms

900.03

721.9s

541.4s

GSAP 2.6%

722.6s

98106ms

890.04

662.1s

441.6s

Next.js 2.1%

822.2s

78189ms

760.10

821.6s

73830ms

Stimulus/Hotwire 1.6%

902.0s

98104ms

910.04

861.5s

82714ms

Angular 1%

623.0s

85174ms

500.30

692.0s

80689ms

Backbone.js 0.8%

692.7s

96112ms

820.07

612.2s

411.6s

Nuxt.js 0.6%

722.6s

89155ms

690.14

731.9s

631.0s

Turbo/Hotwire 0.3%

951.7s

95136ms

950.02

881.4s

74808ms

React 0.2%

802.4s

75203ms

700.16

751.8s

481.2s

Ionic 0.1%

493.7s

87170ms

610.20

472.7s

67955ms

Ember.js 0.1%

772.3s

89130ms

780.09

711.9s

67982ms

Polyfill.io 0%

792.2s

99109ms

850.02

721.9s

611.1s

Marko 0%

603.5s

100123ms

850.10

303.0s

02.7s

Polymer 0%

941.5s

8190ms

820.01

881.3s

82758ms

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 CLS: 95% of its sites pass. Angular trails at 50%. computed

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