The State of Web Vitals

JS libraries impact

Performance impact by framework provider.

Field data PhoneDesktopAll Scope All sites Q2 2026 edition · Desktop field outcomes
Metric LCP INP CLS
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
0.04
Best CLS (p75)
Turbo/Hotwire
The State of Web Vitals · Q2 2026 · 189,915 sites · desktop field datacorewebvitals.io/state-of-cwv
2

The ranking sorted by CLS at p75, fastest first

# Provider CLS p75 Passing Sites
1 Turbo/Hotwire 0.04 91.8%
520
2 Stimulus/Hotwire 0.07 84.7%
3,021
3 Ember.js 0.08 76.6%
114
4 Polyfill.io 0.08 80.0%
88
5 GSAP 0.08 80.3%
4,918
6 Flickity 0.08 81.0%
5,509
7 jQuery 0.09 77.4%
129,336
8 Swiper 0.09 78.4%
29,806
9 Lazysizes 0.10 75.9%
12,984
10 Next.js 0.11 74.8%
3,970
11 Lit 0.11 73.1%
10,260
12 Lodash 0.12 72.4%
25,401
13 Slick Carousel 0.12 71.7%
14,369
14 Moment.js 0.12 72.0%
7,670
15 Vue.js 0.12 71.3%
10,724
16 Backbone.js 0.13 70.1%
1,540
17 Owl Carousel 0.14 67.8%
8,206
18 Nuxt 0.15 65.7%
1,199
19 Ionic 0.17 64.5%
227
20 React 0.19 58.2%
448
21 Angular 0.31 45.8%
1,908
The State of Web Vitals · Q2 2026 · 189,915 sites · desktop 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 92% 0.04
Stimulus/Hotwire 1.6% 3,021 85% 0.07
Marko 0% 20 83% 0.03
Flickity 2.9% 5,509 81% 0.08
GSAP 2.6% 4,918 80% 0.08
Polyfill.io 0% 88 80% 0.08
Swiper 15.7% 29,806 78% 0.09
jQuery 68.1% 129,336 77% 0.09
Ember.js 0.1% 114 77% 0.08
lazysizes 6.8% 12,984 76% 0.10
Next.js 2.1% 3,970 75% 0.11
Lit 5.4% 10,260 73% 0.11
Lodash 13.4% 25,401 72% 0.12
Moment.js 4% 7,670 72% 0.12
Slick Carousel 7.6% 14,369 72% 0.12
Vue.js 5.6% 10,724 71% 0.12
Backbone.js 0.8% 1,540 70% 0.13
Owl Carousel 4.3% 8,206 68% 0.14
Nuxt.js 0.6% 1,199 66% 0.15
Ionic 0.1% 227 65% 0.17
React 0.2% 448 58% 0.19
Angular 1% 1,908 46% 0.31
Polymer 0% 17 43% 0.13
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

92% of Turbo/Hotwire sites pass CLS. Angular trails 46 points behind, leaving 54% of its sites failing. computed

The State of Web Vitals · Q2 2026 · 189,915 sites · desktop 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%
852.0s
9962ms
770.09
801.6s
571.2s
Swiper 15.7%
812.2s
9967ms
780.09
761.8s
531.4s
Lodash 13.4%
772.4s
9869ms
720.12
721.9s
511.5s
Slick Carousel 7.6%
852.0s
9964ms
720.12
811.6s
561.2s
lazysizes 6.8%
852.1s
9966ms
760.10
811.6s
571.2s
Vue.js 5.6%
832.1s
9976ms
710.12
801.6s
611.1s
Lit 5.4%
832.1s
9974ms
730.11
811.6s
631.1s
Owl Carousel 4.3%
842.1s
9962ms
680.14
791.7s
511.3s
Moment.js 4%
802.3s
9967ms
720.12
751.8s
571.3s
Flickity 2.9%
872.0s
10068ms
810.08
831.5s
651.1s
GSAP 2.6%
802.3s
10065ms
800.08
761.8s
521.4s
Next.js 2.1%
872.0s
96104ms
750.11
881.4s
76781ms
Stimulus/Hotwire 1.6%
941.8s
9968ms
850.07
921.3s
80727ms
Angular 1%
712.6s
96115ms
460.31
791.7s
84571ms
Backbone.js 0.8%
732.6s
9968ms
700.13
682.0s
461.5s
Nuxt.js 0.6%
782.4s
9799ms
660.15
781.7s
65995ms
Turbo/Hotwire 0.3%
951.6s
9979ms
920.04
911.2s
78751ms
React 0.2%
762.4s
9492ms
580.19
781.7s
631.1s
Ionic 0.1%
682.8s
94127ms
650.17
622.0s
701.0s
Ember.js 0.1%
842.0s
9779ms
770.08
791.6s
68944ms
Polyfill.io 0%
722.6s
10074ms
800.08
682.0s
541.1s
Marko 0%
832.3s
10076ms
830.03
562.1s
01.7s
Polymer 0%
712.3s
43320ms
430.13
711.9s
86725ms
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: 92% of its sites pass. Angular trails at 46%. computed

The State of Web Vitals · Q2 2026 · 189,915 sites · desktop field datacorewebvitals.io/state-of-cwv
Related signals A/B testing (10) → Personalization (5) → E-commerce (14) → CDN (15) → Chrome field data from 189,915 sites, representing millions of real page loads · How we measured