1
At a glance the headline numbers for JS libraries impact
Performance impact by framework provider.
14
Providers ranked
After min-sites filter
14,650
Sites in sample
Combined across all items
1.8s
Best LCP (p75)
Lodash
The State of Web Vitals · October 2026 · React sites (9,570) · phone field datacorewebvitals.io/state-of-cwv
2
The ranking sorted by LCP at p75, fastest first
| # | Provider | LCP p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | Lodash | 1.8s | 89.4% | 7,076 | |
| 2 | Next.js | 2.3s | 82.6% | 262 | |
| 3 | React | 2.4s | 79.0% | 494 | |
| 4 | Lit | 2.5s | 74.5% | 309 | |
| 5 | Lazysizes | 2.5s | 73.1% | 510 | |
| 6 | Swiper | 2.8s | 65.9% | 1,237 | |
| 7 | Slick Carousel | 2.8s | 63.0% | 343 | |
| 8 | jQuery | 2.9s | 64.1% | 2,648 | |
| 9 | Vue.js | 3.0s | 63.1% | 247 | |
| 10 | GSAP | 3.0s | 60.3% | 125 | |
| 11 | Backbone.js | 3.1s | 65.5% | 100 | |
| 12 | Flickity | 3.1s | 58.0% | 129 | |
| 13 | Moment.js | 3.2s | 58.7% | 1,028 | |
| 14 | Owl Carousel | 3.4s | 63.4% | 142 |
The State of Web Vitals · October 2026 · React sites (9,570) · phone field datacorewebvitals.io/state-of-cwv
3
Passing LCP per provider which group passes the LCP most often
ProviderSitesPassing LCPp75
Lodash 73.9% 7,076 1.8s
Stimulus/Hotwire 0.1% 8 2.2s
Next.js 2.7% 262 2.3s
React 5.2% 494 2.4s
Lit 3.2% 309 2.5s
lazysizes 5.3% 510 2.5s
Angular 0.1% 9 2.6s
Swiper 12.9% 1,237 2.8s
Backbone.js 1% 100 3.1s
jQuery 27.7% 2,648 2.9s
Owl Carousel 1.5% 142 3.4s
Vue.js 2.6% 247 3.0s
Slick Carousel 3.6% 343 2.8s
GSAP 1.3% 125 3.0s
Moment.js 10.7% 1,028 3.2s
Flickity 1.3% 129 3.1s
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
89% of Lodash sites pass LCP. Flickity trails 31 points behind, leaving 42% of its sites failing. computed
The State of Web Vitals · October 2026 · React sites (9,570) · 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
Lodash 73.9%
891.8s
94105ms
940.00
881.3s
77739ms
jQuery 27.7%
642.9s
93131ms
860.04
542.4s
321.9s
Swiper 12.9%
662.8s
92130ms
890.02
572.4s
362.0s
Moment.js 10.7%
593.2s
93129ms
870.03
462.7s
232.2s
lazysizes 5.3%
732.5s
84176ms
870.04
741.8s
591.3s
React 5.2%
792.4s
72220ms
690.18
751.8s
471.2s
Slick Carousel 3.6%
632.8s
78184ms
790.09
592.2s
431.6s
Lit 3.2%
752.5s
92135ms
870.03
751.8s
581.2s
Next.js 2.7%
832.3s
51525ms
590.31
821.5s
421.1s
Vue.js 2.6%
633.0s
90154ms
810.06
552.4s
272.1s
Owl Carousel 1.5%
633.4s
95134ms
820.08
482.5s
352.0s
Flickity 1.3%
583.1s
90125ms
890.01
562.8s
322.2s
GSAP 1.3%
603.0s
96147ms
910.02
572.4s
281.8s
Backbone.js 1%
663.1s
94140ms
800.03
532.4s
352.0s
Angular 0.1%
672.6s
100144ms
830.01
502.0s
501.7s
Stimulus/Hotwire 0.1%
862.2s
86164ms
710.12
861.5s
571.2s
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.
Lodash leads on LCP: 89% of its sites pass. Flickity trails at 58%. computed
The State of Web Vitals · October 2026 · React sites (9,570) · phone field datacorewebvitals.io/state-of-cwv
Related signals A/B testing (12) → Personalization (6) → E-commerce (17) → CDN (16) → 210,902 crawled sites with Chrome field data, representing millions of real page loads · How we measured
210,902 crawled sites with Chrome field data, representing millions of real page loads. How we measured.