WordPress Plugin Count vs Speed: 9+ Plugins Pass 24%

    Top 1M WordPress homepages with 0 to 2 detectable plugins pass Core Web Vitals 57.9% of the time, against 24.0% for those with 9 or more.

    Core Web Vitals pass rate by detectable plugin count: all WordPress vs WooCommerce stores
    0 to 2 (all WordPress)57.9%
    3 to 5 (all WordPress)45.9%
    6 to 8 (all WordPress)30.8%
    9+ (all WordPress)24%
    0 to 2 (WooCommerce)53.8%
    3 to 5 (WooCommerce)39.3%
    6 to 8 (WooCommerce)28.7%
    9+ (WooCommerce)20.9%

    Source: PageSpeed Matters. HTTP Archive top 1M crawl, Sept 2026, mobile, CrUX p75.

    Correlation only: bigger sites tend to run more plugins and heavier pages anyway.

    Source: WordPress Plugin Count vs Speed: 9+ Plugins Pass 24% - PageSpeed Matters