Performance services impact React sites
Performance impact by performance provider.
1
At a glance the headline numbers for Performance services impact
Performance impact by performance provider.
4
Providers ranked
After min-sites filter
575
Sites in sample
Combined across all items
0.02
Best CLS (p75)
LiteSpeed Cache
The State of Web Vitals · October 2026 · React sites (9,570) · phone field datacorewebvitals.io/state-of-cwv
2
The ranking sorted by CLS at p75, fastest first
| # | Provider | CLS p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | LiteSpeed Cache | 0.02 | 93.4% | 160 | |
| 2 | Autoptimize | 0.03 | 85.9% | 132 | |
| 3 | WP Rocket | 0.03 | 89.4% | 215 | |
| 4 | WP Fastest Cache | 0.07 | 81.0% | 68 |
The State of Web Vitals · October 2026 · React sites (9,570) · phone field datacorewebvitals.io/state-of-cwv
3
Passing CLS per provider which group passes the CLS most often
ProviderSitesPassing CLSp75
LiteSpeed Cache 1.7% 160 0.02
Cloudflare APO 0.4% 42 0.01
WP Rocket 2.2% 215 0.03
Autoptimize 1.4% 132 0.03
FlyingPress 0.1% 14 0.03
W3 Total Cache 0.1% 8 0.02
WP Fastest Cache 0.7% 68 0.07
NitroPack 0.1% 6 0.33
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
93% of LiteSpeed Cache sites pass CLS. Autoptimize trails 7 points behind. 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
WP Rocket 2.2%
782.4s
92147ms
890.03
672.1s
411.9s
LiteSpeed Cache 1.7%
782.4s
99119ms
930.02
662.1s
441.6s
Autoptimize 1.4%
612.9s
100126ms
860.03
482.4s
202.0s
WP Fastest Cache 0.7%
633.0s
94112ms
810.07
622.7s
432.0s
Cloudflare APO 0.4%
483.2s
96142ms
900.01
352.8s
302.3s
FlyingPress 0.1%
1001.8s
100143ms
830.03
1001.5s
601.1s
W3 Total Cache 0.1%
505.0s
100102ms
830.02
504.2s
203.1s
NitroPack 0.1%
752.2s
100103ms
500.33
502.1s
331.5s
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: 93% of its sites pass. Autoptimize trails at 86%. computed
The State of Web Vitals · October 2026 · React sites (9,570) · phone 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
210,902 crawled sites with Chrome field data, representing millions of real page loads. How we measured.