The State of Web Vitals

Performance services impact

Performance impact by performance provider.

Field data PhoneDesktopAll Scope All sites Q2 2026 edition · Desktop field outcomes
Metric LCP INP CLS
1

At a glance the headline numbers for Performance services impact

Performance impact by performance provider.

8
Providers ranked
After min-sites filter
17,376
Sites in sample
Combined across all items
0.08
Best CLS (p75)
W3 Total Cache
The State of Web Vitals · Q2 2026 · 189,915 sites · desktop 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 0.08 79.8%
315
2 FlyingPress 0.08 79.7%
200
3 NitroPack 0.09 82.7%
189
4 WP Fastest Cache 0.09 77.3%
2,240
5 Autoptimize 0.09 77.4%
3,754
6 Cloudflare APO 0.10 76.0%
1,100
7 LiteSpeed Cache 0.10 75.9%
4,480
8 WP Rocket 0.10 76.6%
5,098
The State of Web Vitals · Q2 2026 · 189,915 sites · desktop field datacorewebvitals.io/state-of-cwv
3

Passing CLS per provider which group passes the CLS most often

ProviderSitesPassing CLSp75
NitroPack 0.1% 189 83% 0.09
W3 Total Cache 0.2% 315 80% 0.08
FlyingPress 0.1% 200 80% 0.08
Autoptimize 2% 3,754 77% 0.09
WP Fastest Cache 1.2% 2,240 77% 0.09
WP Rocket 2.7% 5,098 77% 0.10
Cloudflare APO 0.6% 1,100 76% 0.10
LiteSpeed Cache 2.4% 4,480 76% 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

83% of NitroPack sites pass CLS. LiteSpeed Cache trails 7 points behind. computed

The State of Web Vitals · Q2 2026 · 189,915 sites · desktop 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%
812.2s
10064ms
770.10
761.8s
451.7s
LiteSpeed Cache 2.4%
792.3s
9963ms
760.10
741.8s
431.5s
Autoptimize 2%
772.4s
10063ms
770.09
692.0s
341.6s
WP Fastest Cache 1.2%
832.1s
9959ms
770.09
781.7s
511.4s
Cloudflare APO 0.6%
732.6s
9969ms
760.10
662.1s
361.7s
W3 Total Cache 0.2%
782.2s
10062ms
800.08
711.9s
401.4s
FlyingPress 0.1%
802.4s
10074ms
800.08
731.9s
461.6s
NitroPack 0.1%
802.3s
10069ms
830.09
741.8s
321.6s
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.

NitroPack leads on CLS: 83% of its sites pass. Cloudflare APO trails at 76%. computed

The State of Web Vitals · Q2 2026 · 189,915 sites · desktop field datacorewebvitals.io/state-of-cwv
Related signals Analytics (20) → Reviews (8) → Maps (4) → Consent platforms (16) → Chrome field data from 189,915 sites, representing millions of real page loads · How we measured