JavaScript-Only Links 2026: 13.8% of Internal Links

    13.8% of the 103,799,125 same-site links on 654,723 top-1M homepages are missing from the raw HTML and only appear after JavaScript runs.

    Core Web Vitals pass rate: all-JavaScript links vs mostly raw HTML links (homepages with CrUX data)
    All links JS-only (38,476)16.9%
    Half or more in raw HTML (459,659)49.1%

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

    Correlation only, not proof that JavaScript links cause slow pages.

    Source: JavaScript-Only Links 2026: 13.8% of Internal Links - PageSpeed Matters