Performance services impact on React sites | The State of Web Vitals 2026

LCP INP CLS

REReact Scoped to 9,570 sites out of 210,902 analyzed (frameworks) Compare with all sites →

At a glance the headline numbers for Performance services impact

Performance impact by performance provider.

Providers ranked

After min-sites filter

575

Sites in sample

Combined across all items

0.04

Best CLS (p75)

LiteSpeed Cache

The State of Web Vitals · October 2026 · React sites (9,570) · all devices field datacorewebvitals.io/state-of-cwv

The ranking sorted by CLS at p75, fastest first

#	Provider	CLS p75	Passing	Sites
1	LiteSpeed Cache	0.04	90.7%	160
2	Autoptimize	0.06	82.0%	132
3	WP Rocket	0.06	85.8%	215
4	WP Fastest Cache	0.12	72.3%	68

The State of Web Vitals · October 2026 · React sites (9,570) · all devices field datacorewebvitals.io/state-of-cwv

Passing CLS per provider which group passes the CLS most often

ProviderSitesPassing CLSp75

LiteSpeed Cache 1.7% 160 91% 0.04

Cloudflare APO 0.4% 42 88% 0.04

W3 Total Cache 0.1% 8 88% 0.07

WP Rocket 2.2% 215 86% 0.06

Autoptimize 1.4% 132 82% 0.06

WP Fastest Cache 0.7% 68 72% 0.12

FlyingPress 0.1% 14 69% 0.15

NitroPack 0.1% 6 67% 0.10

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

91% of LiteSpeed Cache sites pass CLS. Autoptimize trails 9 points behind. computed

The State of Web Vitals · October 2026 · React sites (9,570) · all devices field datacorewebvitals.io/state-of-cwv

All five vitals at once the whole category without toggling - cell is the pass rate, small number the p75

LCP

INP

CLS

FCP

TTFB

WP Rocket 2.2%

722.6s

97122ms

860.06

642.2s

332.0s

LiteSpeed Cache 1.7%

782.4s

100105ms

910.04

672.1s

411.7s

Autoptimize 1.4%

553.2s

100114ms

820.06

462.7s

162.1s

WP Fastest Cache 0.7%

593.2s

98109ms

720.12

572.9s

432.5s

Cloudflare APO 0.4%

553.1s

100127ms

880.04

412.5s

252.2s

FlyingPress 0.1%

692.6s

100118ms

690.15

542.0s

182.2s

W3 Total Cache 0.1%

634.3s

100109ms

880.07

383.8s

02.3s

NitroPack 0.1%

502.9s

10096ms

670.10

502.6s

202.1s

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.

LiteSpeed Cache leads on CLS: 91% of its sites pass. Autoptimize trails at 82%. computed

The State of Web Vitals · October 2026 · React sites (9,570) · all devices field datacorewebvitals.io/state-of-cwv

Related signals Analytics (20) → Reviews (8) → Maps (4) → CMS (17) → 210,902 crawled sites with Chrome field data, representing millions of real page loads · How we measured

Performance services impact React sites

At a glance the headline numbers for Performance services impact

The ranking sorted by CLS at p75, fastest first

Passing CLS per provider which group passes the CLS most often

All five vitals at once the whole category without toggling - cell is the pass rate, small number the p75