Why it matters
Googlebot reads only the first 2 MB of an HTML file (uncompressed); content, links and JSON-LD past the cut-off don't exist for indexing. Next.js inlines the RSC payload, roughly doubling text weight.
How to fix it
Paginate long lists, move large data out of Client Component props, avoid inlining big SVG/CSS, and keep below 1 MB.
References
More seo rules
void seo reports 60 rules in this category. What search engines need from the raw response: status codes, titles and descriptions in <head>, self-referencing canonicals, one h1, crawlable links, Open Graph, icons, robots.txt and a sitemap with real dates.
client-redirectRedirect done with meta refresh or JavaScriptnoindexIndexable page carries noindexrobots-snippet-restrictednosnippet or a very low max-snippet limits previewssoft-404Missing page returns HTTP 200 (soft 404)rsc-payload-ratioInline RSC flight payload dominates the HTMLnot-httpsPage served over plain HTTPorigin-redirectshttp:// or www/apex variant doesn't redirect to the canonical origin in one hophtml-lang<html lang> missing or not a valid BCP 47 tag