WordPress cookie count and the Core Web Vitals
28.3% of audited sites (17,883) set zero cookies on initial load and pass LCP at 76% (1.8s median), whereas the 34.7% setting 6 or more cookies pass at 63% (2.2s median).
28.3% of WordPress sites use 0 cookies cookie count, and 76% of those sites have a good LCP, against 70% of all WordPress sites.
LCP pass rate
Sites with 0 cookies cookie count have a good LCP most often: 76%, against 70% of all WordPress sites. Sites with 6 or more cookies cookies have it least often, at 63%.
Cookie count usage
6 or more cookies is the most used: 34.7% of WordPress sites. 0 cookies is 28.3% of WordPress sites.
The four LCP phases
Across the four LCP sub-parts in Chrome's field data, the largest gap between 0 cookies and 6 or more cookies sits in time to first byte (TTFB): 999 ms median for 0 cookies against 1297 ms for 6 or more cookies. Overall median field LCP is 1.8s for 0 cookies (TTFB 999 ms, load delay 329 ms, load duration 184 ms, render delay 217 ms) versus 2.2s for 6 or more cookies.
Cookie count per framework
Vue sets the cookie count to 0 cookies on 53% of its sites, and 67% of Vue sites have a good LCP, against 70% of all sites. React sets the cookie count to 6 or more cookies on 54% of its sites, and 63% of React sites have a good LCP.
Alpine 380 sites6+ cookies 46%3 to 5 cookies 21%1 to 2 cookies 19%0 cookies 14%78%
jQuery 60,314 sites6+ cookies 36%0 cookies 27%1 to 2 cookies 20%3 to 5 cookies 17%69%
Vue 4,844 sites0 cookies 53%1 to 2 cookies 23%6+ cookies 15%67%
React 2,233 sites6+ cookies 54%0 cookies 18%1 to 2 cookies 15%3 to 5 cookies 13%63%Cookie count or the framework
Does the framework explain the cookie count difference?
On jQuery, 74% of sites with 0 cookies cookie count have a good LCP, against 62% of jQuery sites with 6 or more cookies. Within jQuery, sites with 0 cookies have a good LCP more often. On Vue, 68% of sites with 0 cookies cookie count have a good LCP, against 61% of Vue sites with 6 or more cookies. Within Vue, sites with 0 cookies have a good LCP more often.
How cookie proliferation signals CDN bypass and tracker bloat
High cookie counts reflect two compounding problems: origin Set-Cookie headers that force CDNs to bypass full-page HTML caching, and heavy marketing/ad-tech tags firing during page load. Across 17,883 sites (28.3%) setting zero cookies, 76% pass field LCP at a 1.8s median, compared with 63% (2.2s median) on the 34.7% (21,978) setting 6+ cookies.
Understanding cookie count
Prevent plugins and WooCommerce from setting PHP session cookies on anonymous landing pages so Cloudflare or Varnish can serve cached HTML. On WordPress, 28.3% of sites set zero cookies (76% good LCP) while 34.7% set 6 or more (63% good LCP).
By Arjen Karel · 63,295 crawled WordPress sites (36,524 with phone Chrome field data, October 2026). How we measured.