JS libraries impact Shopify sites

Performance impact by framework provider.

Field data PhoneDesktopAll Scope All sites October 2026 edition · Phone field outcomes · Shopify sites only
Metric LCP INP CLS
Shopify Scoped to 8,248 sites out of 203,892 analyzed (cms) Compare with all sites →
1

At a glance the headline numbers for JS libraries impact

Performance impact by framework provider.

11
Providers ranked
After min-sites filter
12,079
Sites in sample
Combined across all items
1.8s
Best LCP (p75)
Vue.js
The State of Web Vitals · October 2026 · Shopify sites (8,248) · phone field datacorewebvitals.io/state-of-cwv
2

The ranking sorted by LCP at p75, fastest first

# Provider LCP p75 Passing Sites
1 Vue.js 1.8s 94.4%
933
2 Lodash 1.8s 93.4%
896
3 GSAP 1.8s 94.9%
182
4 Lit 1.9s 94.1%
966
5 Swiper 1.9s 93.3%
1,535
6 jQuery 1.9s 92.7%
3,185
7 Moment.js 1.9s 92.7%
151
8 Flickity 1.9s 92.6%
1,551
9 Lazysizes 2.0s 92.0%
1,720
10 Slick Carousel 2.0s 91.1%
794
11 Owl Carousel 2.0s 90.5%
166
The State of Web Vitals · October 2026 · Shopify sites (8,248) · phone field datacorewebvitals.io/state-of-cwv
3

Passing LCP per provider which group passes the LCP most often

ProviderSitesPassing LCPp75
React 0.1% 7 100% 1.4s
Angular 0.1% 7 100% 1.9s
GSAP 2.2% 182 95% 1.8s
Vue.js 11.3% 933 94% 1.8s
Lit 11.7% 966 94% 1.9s
Lodash 10.9% 896 93% 1.8s
Swiper 18.6% 1,535 93% 1.9s
jQuery 38.6% 3,185 93% 1.9s
Moment.js 1.8% 151 93% 1.9s
Flickity 18.8% 1,551 93% 1.9s
lazysizes 20.9% 1,720 92% 2.0s
Slick Carousel 9.6% 794 91% 2.0s
Owl Carousel 2% 166 91% 2.0s
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

No provider stands out: pass rates sit between 91% and 95%. computed

The State of Web Vitals · October 2026 · Shopify sites (8,248) · 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 38.6%
931.9s
92144ms
910.03
931.3s
95531ms
lazysizes 20.9%
922.0s
94137ms
890.03
931.3s
96519ms
Flickity 18.8%
931.9s
93141ms
920.02
931.2s
95530ms
Swiper 18.6%
931.9s
88163ms
920.03
931.3s
94555ms
Lit 11.7%
941.9s
89163ms
920.03
941.3s
97538ms
Vue.js 11.3%
941.8s
91153ms
900.03
961.2s
96542ms
Lodash 10.9%
931.8s
94132ms
910.03
921.2s
96508ms
Slick Carousel 9.6%
912.0s
92140ms
900.03
941.3s
96513ms
GSAP 2.2%
951.8s
94139ms
980.01
951.2s
93532ms
Owl Carousel 2%
912.0s
96127ms
830.08
891.3s
90524ms
Moment.js 1.8%
931.9s
95139ms
880.03
901.3s
95540ms
React 0.1%
1001.4s
10095ms
1000.01
100839ms
100450ms
Angular 0.1%
1001.9s
100170ms
830.05
1001.2s
100467ms
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.

GSAP leads on LCP: 95% of its sites pass. Owl Carousel trails at 91%. computed

The State of Web Vitals · October 2026 · Shopify sites (8,248) · phone field datacorewebvitals.io/state-of-cwv
Related signals A/B testing (12) → Personalization (6) → E-commerce (17) → CDN (16) → 203,892 crawled sites with Chrome field data, representing millions of real page loads · How we measured