Client Side Rendering (CSR)

Client-side rendering (CSR) is a web architecture pattern where JavaScript frameworks like React, Vue, or Angular send a minimal HTML shell to the browser, and the browser then executes JavaScript to fetch data and render the full page content. This approach can delay content visibility for both users and search engine crawlers.

SEOs evaluate CSR impact using Google Search Console's URL Inspection tool and Fetch as Google to see what Googlebot actually renders. Tools like Screaming Frog and Chrome's DevTools with JavaScript disabled help identify content that may be invisible to crawlers due to client-side rendering.