Heading Hierarchy Errors: 44.8% of Top 1M Pages Skip a Level

    Of 1,119,394 top-1M pages with two or more headings, 44.8% jump a heading level, for example from H2 straight to H4.

    Pages that skip a heading level, by site popularity
    Top 1K32.7%
    1K to 10K36.5%
    10K to 100K41%
    Below 100K45.2%

    Source: PageSpeed Matters. HTTP Archive crawl, Sept 2026, mobile, pages with two or more headings.

    Sites ranked by Chrome traffic; each band excludes the more popular bands before it.

    Source: Heading Hierarchy Errors: 44.8% of Top 1M Pages Skip a Level - PageSpeed Matters