Performance services impact WordPress sites
Performance impact by performance provider.
1
At a glance the headline numbers for Performance services impact
Performance impact by performance provider.
8
Providers ranked
After min-sites filter
15,516
Sites in sample
Combined across all items
0.01
Best CLS (p75)
W3 Total Cache
The State of Web Vitals · October 2026 · WordPress sites (63,295) · phone field datacorewebvitals.io/state-of-cwv
2
The ranking sorted by CLS at p75, fastest first
| # | Provider | CLS p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | W3 Total Cache | 0.01 | 89.2% | 302 | |
| 2 | LiteSpeed Cache | 0.01 | 90.0% | 4,083 | |
| 3 | WP Fastest Cache | 0.02 | 89.2% | 2,014 | |
| 4 | Autoptimize | 0.02 | 91.5% | 3,652 | |
| 5 | WP Rocket | 0.02 | 89.4% | 4,279 | |
| 6 | FlyingPress | 0.02 | 89.8% | 191 | |
| 7 | Cloudflare APO | 0.03 | 88.6% | 812 | |
| 8 | NitroPack | 0.04 | 88.0% | 183 |
The State of Web Vitals · October 2026 · WordPress sites (63,295) · phone field datacorewebvitals.io/state-of-cwv
3
Passing CLS per provider which group passes the CLS most often
ProviderSitesPassing CLSp75
Autoptimize 5.8% 3,652 0.02
LiteSpeed Cache 6.5% 4,083 0.01
FlyingPress 0.3% 191 0.02
WP Rocket 6.8% 4,279 0.02
WP Fastest Cache 3.2% 2,014 0.02
W3 Total Cache 0.5% 302 0.01
Cloudflare APO 1.3% 812 0.03
NitroPack 0.3% 183 0.04
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
No provider stands out: pass rates sit between 88% and 92%. computed
The State of Web Vitals · October 2026 · WordPress sites (63,295) · 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 6.8%
792.4s
94137ms
890.02
702.0s
481.5s
LiteSpeed Cache 6.5%
832.2s
97120ms
900.01
761.8s
551.3s
Autoptimize 5.8%
672.8s
96124ms
920.02
552.4s
281.9s
WP Fastest Cache 3.2%
692.8s
98116ms
890.02
602.3s
431.8s
Cloudflare APO 1.3%
613.0s
93140ms
890.03
502.5s
271.9s
W3 Total Cache 0.5%
762.5s
97120ms
890.01
632.2s
411.5s
FlyingPress 0.3%
832.3s
95138ms
900.02
761.7s
621.2s
NitroPack 0.3%
812.2s
93138ms
880.04
711.9s
461.3s
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.
Autoptimize leads on CLS: 92% of its sites pass. NitroPack trails at 88%. computed
The State of Web Vitals · October 2026 · WordPress sites (63,295) · phone field datacorewebvitals.io/state-of-cwv
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203,892 crawled sites with Chrome field data, representing millions of real page loads. How we measured.