Technical SEO

JavaScript Rendering

JavaScript rendering is how and when a page's content is generated: on the server before delivery (SSR/SSG) or in the browser after load (CSR).

It matters for SEO because many crawlers, and most AI crawlers, do not reliably execute client-side JavaScript, so content rendered only in the browser can be invisible to them. Server-rendering or pre-rendering important content keeps it crawlable. This is one of the most common hidden causes of lost organic and AI-search visibility.