The State of Web Vitals

JS libraries impact Shopify sites

Performance impact by framework provider.

Field data PhoneDesktopAll Scope All sites October 2026 edition · All devices 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
0.02
Best CLS (p75)
GSAP
The State of Web Vitals · October 2026 · Shopify sites (8,248) · all devices field datacorewebvitals.io/state-of-cwv
2

The ranking sorted by CLS at p75, fastest first

# Provider CLS p75 Passing Sites
1 GSAP 0.02 96.6%
182
2 Flickity 0.03 92.0%
1,551
3 Moment.js 0.04 89.1%
151
4 Slick Carousel 0.04 89.2%
794
5 Lodash 0.04 90.5%
896
6 Vue.js 0.04 90.5%
933
7 Lit 0.04 90.9%
966
8 Swiper 0.04 91.2%
1,535
9 Lazysizes 0.04 89.3%
1,720
10 jQuery 0.04 90.7%
3,185
11 Owl Carousel 0.09 81.8%
166
The State of Web Vitals · October 2026 · Shopify sites (8,248) · all devices field datacorewebvitals.io/state-of-cwv
3

Passing CLS per provider which group passes the CLS most often

ProviderSitesPassing CLSp75
React 0.1% 7 100% 0.03
GSAP 2.2% 182 97% 0.02
Flickity 18.8% 1,551 92% 0.03
Swiper 18.6% 1,535 91% 0.04
Lit 11.7% 966 91% 0.04
jQuery 38.6% 3,185 91% 0.04
Vue.js 11.3% 933 91% 0.04
Lodash 10.9% 896 91% 0.04
lazysizes 20.9% 1,720 89% 0.04
Slick Carousel 9.6% 794 89% 0.04
Moment.js 1.8% 151 89% 0.04
Angular 0.1% 7 86% 0.04
Owl Carousel 2% 166 82% 0.09
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

97% of GSAP sites pass CLS. Owl Carousel trails 15 points behind. computed

The State of Web Vitals · October 2026 · Shopify sites (8,248) · 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 38.6%
941.8s
95128ms
910.04
941.2s
95521ms
lazysizes 20.9%
931.9s
96121ms
890.04
941.2s
96517ms
Flickity 18.8%
941.9s
96128ms
920.03
941.2s
96524ms
Swiper 18.6%
941.8s
93145ms
910.04
931.2s
95542ms
Lit 11.7%
951.8s
94144ms
910.04
941.2s
97531ms
Vue.js 11.3%
951.7s
94136ms
910.04
961.2s
94536ms
Lodash 10.9%
941.7s
96118ms
910.04
931.2s
96508ms
Slick Carousel 9.6%
921.9s
95126ms
890.04
941.2s
96517ms
GSAP 2.2%
961.8s
96130ms
970.02
961.2s
94556ms
Owl Carousel 2%
912.0s
97118ms
820.09
911.2s
92525ms
Moment.js 1.8%
951.8s
97126ms
890.04
941.2s
97501ms
React 0.1%
1001.3s
10084ms
1000.03
100817ms
100452ms
Angular 0.1%
1001.8s
100144ms
860.04
1001.1s
100542ms
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 CLS: 97% of its sites pass. Owl Carousel trails at 82%. computed

The State of Web Vitals · October 2026 · Shopify sites (8,248) · all devices 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