Client-Side Rendering (CSR)

Client-Side Rendering is an architectural approach where the server sends a minimal, often empty, HTML shell to the browser. The user's browser then executes JavaScript to fetch data and build (render) the page content locally. This is like the server sending a flat-pack furniture kit with instructions, and the browser must do all the assembly. While this can create app-like experiences, it often results in a long wait before the user sees any meaningful content, leading to a poor Largest Contentful Paint (LCP).