34.8% of React sites use WP Rocket performance optimization plugins, and 76% of those sites have a good LCP, against 79% of all React sites.
34.8% of React sites use WP Rocket performance optimization plugins, and 77% of those sites have a good CLS, against 80% of all React sites.
The State of Web Vitals · October 2026 · React: 9,570 crawled sites · 1,979 with desktop field data · 618 sites with performance optimization pluginsBy Arjen Karel · corewebvitals.io/state-of-cwv
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Core Web Vitals pass rate
Sites with WP Rocket performance optimization plugins have a good LCP most often: 76%, against 79% of all React sites.
Sites with WP Rocket performance optimization plugins have a good CLS most often: 77%, against 80% of all React sites.
SitesAll three good · at least one needs improvement · at least one poor
All React sites1,97963%
WP Fastest Cache 11.0%1867%
WP Rocket 34.8%10362%
Autoptimize 21.4%3955%
LiteSpeed Cache 25.9%5944%
FlyingPress 2.3%540%
Cloudflare APO 6.8%2028%
SitesGood, needs improvement, poor LCPMedian
All React sites1,97979%1.5s
FlyingPress 2.3%580%2.0s
WP Rocket 34.8%10376%1.7s
WP Fastest Cache 11.0%1872%1.6s
Autoptimize 21.4%3968%2.1s
LiteSpeed Cache 25.9%5968%1.7s
Cloudflare APO 6.8%2045%2.6s
SitesGood, needs improvement, poor INPMedian
All React sites1,97999%48ms
LiteSpeed Cache 25.9%59100%50ms
Autoptimize 21.4%39100%50ms
WP Fastest Cache 11.0%18100%46ms
FlyingPress 2.3%5100%52ms
WP Rocket 34.8%10399%58ms
Cloudflare APO 6.8%2089%60ms
SitesGood, needs improvement, poor CLSMedian
All React sites1,97980%0.02
WP Fastest Cache 11.0%1883%0.01
WP Rocket 34.8%10377%0.03
Autoptimize 21.4%3974%0.04
Cloudflare APO 6.8%2070%0.03
LiteSpeed Cache 25.9%5964%0.06
FlyingPress 2.3%540%0.11
GoodNeeds improvementPoorSites: with Chrome field data
The State of Web Vitals · October 2026 · React: 9,570 crawled sites · 1,979 with desktop field data · 618 sites with performance optimization pluginsBy Arjen Karel · corewebvitals.io/state-of-cwv
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Performance optimization plugins usage
WP Rocket is the most used: 34.8% of React sites.
Sites using each option (sites can use more than one) 618 sites
WP Rocket 34.8% LiteSpeed Cache 25.9% Autoptimize 21.4% WP Fastest Cache 11.0%
WP Rocket 34.8% LiteSpeed Cache 25.9% Autoptimize 21.4% WP Fastest Cache 11.0% Cloudflare APO 6.8% FlyingPress 2.3%
The State of Web Vitals · October 2026 · React: 9,570 crawled sites · 1,979 with desktop field data · 618 sites with performance optimization pluginsBy Arjen Karel · corewebvitals.io/state-of-cwv
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Where optimization plugins save time: the four LCP phases
Median LCP phase breakdown (Chrome field p75) Load delay Median LCP
React sites with performance optimization plugins 1831157 ms276 mslab 303 ms1.8s
WP Rocket 831125 ms235 mslab 275 ms1.7s
LiteSpeed Cache 421053 ms379 ms379 mslab 384 ms1.8s
TTFB Resource load delay Resource load time Element render delay
The State of Web Vitals · October 2026 · React: 9,570 crawled sites · 1,979 with desktop field data · 618 sites with performance optimization pluginsBy Arjen Karel · corewebvitals.io/state-of-cwv
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Performance optimization plugins per platform
On WordPress, 35% of sites use WP Rocket performance optimization plugins, and 51% of WordPress sites pass all three Core Web Vitals, against 63% of all sites.
On WordPress, 35% of sites use WP Rocket performance optimization plugins, and 66% of WordPress sites have a good LCP, against 79% of all sites.
On WordPress, 35% of sites use WP Rocket performance optimization plugins, and 100% of WordPress sites have a good INP, against 99% of all sites.
On WordPress, 35% of sites use WP Rocket performance optimization plugins, and 75% of WordPress sites have a good CLS, against 80% of all sites.
PlatformPerformance optimization plugins on its sitesPass all threeGood LCPGood INPGood CLS
React sites with performance optimization plugins 618 sitesWP Rocket 35%LiteSpeed Cache 26%Autoptimize 21%WP Fastest Cache 11%63%79%99%80%
WordPress 590 sitesWP Rocket 35%LiteSpeed Cache 26%Autoptimize 22%WP Fastest Cache 11%51%66%100%75% WP Rocket LiteSpeed Cache Autoptimize WP Fastest Cache Cloudflare APO FlyingPress
The State of Web Vitals · October 2026 · React: 9,570 crawled sites · 1,979 with desktop field data · 618 sites with performance optimization pluginsBy Arjen Karel · corewebvitals.io/state-of-cwv
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Optimization plugins or the platform
Does the platform explain the performance optimization plugins difference?
On WordPress, 76% of sites with WP Rocket performance optimization plugins have a good LCP, against 67% of WordPress sites with LiteSpeed Cache. Within WordPress, sites with WP Rocket and LiteSpeed Cache have a good LCP about equally often.
On WordPress, 78% of sites with WP Rocket performance optimization plugins have a good CLS, against 64% of WordPress sites with LiteSpeed Cache. Within WordPress, sites with WP Rocket and LiteSpeed Cache have a good CLS about equally often.
The State of Web Vitals · October 2026 · React: 9,570 crawled sites · 1,979 with desktop field data · 618 sites with performance optimization pluginsBy Arjen Karel · corewebvitals.io/state-of-cwv