29.3% of JavaScript-Built Home Pages Look Almost Empty to AI Crawlers vs 14.4% of Other Sites

    29.3% of home pages built with a JavaScript framework deliver fewer than 200 characters of readable text to AI crawlers that read the page as the server sends it, twice the 14.4% of other home pages. On 17.5% of them, the main heading is missing until JavaScript runs.

    JavaScript framework home pages
    Main heading appears only after JavaScript runs
    17.5%
    Fewer than 200 characters of text before JavaScript runs
    29.3%
    Structured data added only through JavaScript
    7.2%

    Source: Suff Digital analysis of 384,588 home pages of the 500,000 most visited websites · the public HTTP Archive crawl, September 2026

    Main heading only after JavaScript by popularity rank
    Top 10,000
    11.1%
    10,000 to 100,000
    11.5%
    100,000 to 500,000
    10.7%
    All top 500,000
    10.8%

    Source: Suff Digital analysis of 384,588 home pages of the 500,000 most visited websites · the public HTTP Archive crawl, September 2026

    Source: 29.3% of JavaScript-Built Home Pages Look Almost Empty to AI Crawlers vs 14.4% of Other Sites - Suff Digital