1
At a glance the headline numbers for Performance services impact
Performance impact by performance provider.
8
Providers ranked
After min-sites filter
17,402
Sites in sample
Combined across all items
0.01
Best CLS (p75)
LiteSpeed Cache
The State of Web Vitals · Q2 2026 · 189,915 sites · 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 | 0.01 | 90.1% | 4,484 | |
| 2 | W3 Total Cache | 0.02 | 89.1% | 316 | |
| 3 | WP Fastest Cache | 0.02 | 88.8% | 2,247 | |
| 4 | Autoptimize | 0.02 | 91.1% | 3,758 | |
| 5 | WP Rocket | 0.02 | 89.6% | 5,106 | |
| 6 | FlyingPress | 0.03 | 86.8% | 200 | |
| 7 | Cloudflare APO | 0.03 | 89.5% | 1,102 | |
| 8 | NitroPack | 0.04 | 90.1% | 189 |
The State of Web Vitals · Q2 2026 · 189,915 sites · phone field datacorewebvitals.io/state-of-cwv
3
Passing CLS per provider which group passes the CLS most often
ProviderSitesPassing CLSp75
Autoptimize 2% 3,758 0.02
LiteSpeed Cache 2.4% 4,484 0.01
NitroPack 0.1% 189 0.04
WP Rocket 2.7% 5,106 0.02
Cloudflare APO 0.6% 1,102 0.03
W3 Total Cache 0.2% 316 0.02
WP Fastest Cache 1.2% 2,247 0.02
FlyingPress 0.1% 200 0.03
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 87% and 91%. computed
The State of Web Vitals · Q2 2026 · 189,915 sites · 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 2.7%
812.3s
94135ms
900.02
721.9s
511.5s
Cloudflare APO 0.6%
692.7s
92139ms
890.03
582.3s
331.8s
NitroPack 0.1%
842.1s
93137ms
900.04
721.9s
451.3s
LiteSpeed Cache 2.4%
842.2s
97121ms
900.01
761.8s
561.2s
Autoptimize 2%
682.8s
96124ms
910.02
562.3s
291.9s
WP Fastest Cache 1.2%
692.7s
97118ms
890.02
612.3s
421.7s
W3 Total Cache 0.2%
752.5s
96121ms
890.02
642.2s
411.5s
FlyingPress 0.1%
792.4s
95142ms
870.03
731.8s
611.2s
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: 91% of its sites pass. FlyingPress trails at 87%. computed
The State of Web Vitals · Q2 2026 · 189,915 sites · phone field datacorewebvitals.io/state-of-cwv
Related signals Analytics (20) → Reviews (8) → Maps (4) → CMS (17) → Chrome field data from 189,915 sites, representing millions of real page loads · How we measured
Chrome field data from 189,915 sites, representing millions of real page loads. How we measured.