client-side-rendering

Client-side rendering (CSR) delegates rendering to the browser, moving logic and data fetching away from the server to enable highly interactive user interfaces. The server sends minimal HTML, and the React app handles UI rendering and state management client-side.

Use client-side rendering for internal tools, dashboards, and single-page applications where SEO is not a priority. Avoid CSR for content-heavy public pages, as they may render slower initially and require server-side rendering or static generation for better indexability.

To build a CSR React SPA, start by creating a small application that renders content client-side. Wire it to fetch data via APIs, implement client-side state management, and apply code-splitting with lazy loading to optimize the initial load times.

Improve CSR web performance by applying code-splitting and lazy loading to keep initial bundles small. Additionally, optimize client-side state management and enable offline support via service workers to boost the application's interactivity and load speeds.

Client-side rendering is not ideal for content-heavy public pages because they may render slower initially and lack proper SEO. For these use cases, server-side rendering (SSR) or static site generation (SSG) are recommended for better indexability and initial paint.