The JavaScript Framework Effect: How React, Angular, Next.js, and Astro Impact Website Quality
We analyzed 160,000+ websites across 15 JavaScript frameworks, static site generators, and CMS platforms, then cross-referenced them with SEO, EEAT, WCAG, and readability grades. Ghost blogs have a 10.4% SEO pass rate — 5x the web average. React sites have the best WCAG accessibility but the worst SEO. And jQuery — still on 113,000 sites — underperforms everywhere.