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Most people pick a rendering style for the wrong reasons.
The core question is: where does your HTML get built?
Server-Side Rendering (SSR) The server builds the HTML. You get a full page immediately. This helps your search rank.
Client-Side Rendering (CSR) The browser builds the HTML. Users see a blank screen while JavaScript loads. This hurts slow devices. Use this for dashboards or internal tools.
Static Site Generation (SSG) The HTML is built once. It is the fastest option. Use this for blogs and docs.
The Decision Guide:
- Use SSG for marketing and blogs.
- Use SSR for real-time data.
- Use CSR for apps behind a login.
- Use a hybrid for most modern sites.
Watch out for hydration errors. These happen when the server and browser disagree on content. It causes bugs.
Check your bundle size before you switch strategies. Huge files slow down your site more than the rendering method.