JavaScript SEO

JavaScript SEO is the work that makes pages built with React, Vue or Next.js reachable to bots as fully-rendered content. Google does render JS, but it spends a separate render budget on it — heavy JS means delayed indexing or missing content.

The standard toolkit is server-side rendering, static generation, or a prerender service that hands bots the fully assembled HTML. The habit that matters more than any specific technique is checking view-source: if the body text and meta tags are not actually present there, the page is effectively blank to a crawler.

AI search crawlers generally render JS less aggressively than Google. Most of GPTBot, PerplexityBot and friends behave more like classic HTML readers, so for GEO you really do want body content delivered from the server — not assembled in the client.