JS libraries impact

Performance impact by framework provider.

Field data PhoneDesktopAll Scope All sites Q1 2026 edition · All devices field outcomes
Metric LCP INP CLS
1

At a glance the headline numbers for JS libraries impact

Performance impact by framework provider.

20
Providers ranked
After min-sites filter
142,710
Sites in sample
Combined across all items
0.01
Best CLS (p75)
Turbo/Hotwire
The State of Web Vitals · Q1 2026 · 94,910 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 0.01 95.7%
258
2 GSAP 0.03 89.7%
2,573
3 jQuery 0.03 88.4%
67,906
4 Flickity 0.03 90.6%
2,891
5 Lodash 0.04 86.2%
13,200
6 Stimulus/Hotwire 0.04 90.5%
1,536
7 Swiper 0.04 88.2%
15,692
8 Lazysizes 0.05 86.9%
6,844
9 Slick Carousel 0.05 84.6%
7,462
10 Moment.js 0.06 82.7%
4,065
11 Lit 0.06 82.5%
5,243
12 Vue.js 0.06 83.4%
5,677
13 Owl Carousel 0.07 80.9%
4,359
14 Backbone.js 0.07 80.3%
818
15 Next.js 0.09 77.7%
2,085
16 Ember.js 0.14 71.9%
67
17 React 0.14 71.4%
235
18 Nuxt 0.14 69.3%
647
19 Ionic 0.23 56.5%
116
20 Angular 0.30 48.3%
1,036
The State of Web Vitals · Q1 2026 · 94,910 sites · all devices field datacorewebvitals.io/state-of-cwv
3

Passing CLS per provider which group passes the CLS most often

ProviderSitesPassing CLSp75
Marko 0% 12 100% 0.02
Turbo/Hotwire 0.3% 258 96% 0.01
Flickity 3% 2,891 91% 0.03
Stimulus/Hotwire 1.6% 1,536 91% 0.04
GSAP 2.7% 2,573 90% 0.03
jQuery 71.5% 67,906 88% 0.03
Swiper 16.5% 15,692 88% 0.04
lazysizes 7.2% 6,844 87% 0.05
Lodash 13.9% 13,200 86% 0.04
Slick Carousel 7.9% 7,462 85% 0.05
Vue.js 6% 5,677 83% 0.06
Moment.js 4.3% 4,065 83% 0.06
Lit 5.5% 5,243 83% 0.06
Owl Carousel 4.6% 4,359 81% 0.07
Polyfill.io 0% 46 80% 0.06
Backbone.js 0.9% 818 80% 0.07
Next.js 2.2% 2,085 78% 0.09
Ember.js 0.1% 67 72% 0.14
React 0.2% 235 71% 0.14
Nuxt.js 0.7% 647 69% 0.14
Ionic 0.1% 116 57% 0.23
Angular 1.1% 1,036 48% 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

96% of Turbo/Hotwire sites pass CLS. Angular trails 48 points behind, leaving 52% of its sites failing. computed

The State of Web Vitals · Q1 2026 · 94,910 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 71.5%
812.2s
97104ms
880.03
741.9s
521.4s
Swiper 16.5%
752.5s
97112ms
880.04
672.1s
451.6s
Lodash 13.9%
792.3s
96107ms
860.04
731.9s
581.3s
Slick Carousel 7.9%
822.2s
96108ms
850.05
761.8s
541.2s
lazysizes 7.2%
802.3s
96114ms
870.05
731.9s
501.4s
Vue.js 6%
772.4s
95128ms
830.06
711.9s
521.3s
Lit 5.5%
772.4s
93121ms
830.06
721.9s
571.2s
Owl Carousel 4.6%
802.3s
97105ms
810.07
741.8s
501.3s
Moment.js 4.3%
762.5s
95119ms
830.06
702.0s
521.4s
Flickity 3%
802.3s
98113ms
910.03
731.9s
541.4s
GSAP 2.7%
732.6s
98106ms
900.03
672.1s
441.6s
Next.js 2.2%
822.2s
78188ms
780.09
821.6s
74821ms
Stimulus/Hotwire 1.6%
892.0s
98105ms
910.04
861.5s
82712ms
Angular 1.1%
613.0s
86171ms
480.30
702.0s
81671ms
Backbone.js 0.9%
712.7s
97111ms
800.07
622.2s
431.6s
Nuxt.js 0.7%
722.6s
90155ms
690.14
731.9s
601.0s
Turbo/Hotwire 0.3%
951.6s
95136ms
960.01
891.3s
78763ms
React 0.2%
822.3s
75202ms
710.14
751.8s
481.2s
Ionic 0.1%
423.8s
82175ms
570.23
442.8s
681.0s
Ember.js 0.1%
732.7s
91130ms
720.14
682.0s
72874ms
Polyfill.io 0%
822.2s
97111ms
800.06
761.7s
631.1s
Marko 0%
672.8s
100123ms
1000.02
172.3s
02.0s
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: 96% of its sites pass. Angular trails at 48%. computed

The State of Web Vitals · Q1 2026 · 94,910 sites · all devices field datacorewebvitals.io/state-of-cwv
Related signals A/B testing (10) → Personalization (5) → E-commerce (14) → CDN (15) → Chrome field data from 94,910 sites, representing millions of real page loads · How we measured