The State of Web Vitals

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
0.01
Best CLS (p75)
GSAP
The State of Web Vitals · October 2026 · Shopify sites (8,248) · phone field datacorewebvitals.io/state-of-cwv
2

The ranking sorted by CLS at p75, fastest first

# Provider CLS p75 Passing Sites
1 GSAP 0.01 97.8%
182
2 Flickity 0.02 92.0%
1,551
3 Moment.js 0.03 87.6%
151
4 Slick Carousel 0.03 89.5%
794
5 Lodash 0.03 91.4%
896
6 Vue.js 0.03 89.7%
933
7 Lit 0.03 91.5%
966
8 Swiper 0.03 92.2%
1,535
9 jQuery 0.03 90.8%
3,185
10 Lazysizes 0.03 88.8%
1,720
11 Owl Carousel 0.08 83.2%
166
The State of Web Vitals · October 2026 · Shopify sites (8,248) · phone 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% 0.01
GSAP 2.2% 182 98% 0.01
Swiper 18.6% 1,535 92% 0.03
Flickity 18.8% 1,551 92% 0.02
Lit 11.7% 966 92% 0.03
Lodash 10.9% 896 91% 0.03
jQuery 38.6% 3,185 91% 0.03
Vue.js 11.3% 933 90% 0.03
Slick Carousel 9.6% 794 90% 0.03
lazysizes 20.9% 1,720 89% 0.03
Moment.js 1.8% 151 88% 0.03
Angular 0.1% 7 83% 0.05
Owl Carousel 2% 166 83% 0.08
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

98% of GSAP sites pass CLS. Owl Carousel trails 15 points behind. 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 CLS: 98% of its sites pass. Owl Carousel trails at 83%. 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