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Frontend & Web Development

Server-Side Rendering

With server-side rendering, the server generates a page's HTML before sending it to the browser.

Server-side rendering generates a page’s HTML on the server before it reaches the browser, which can improve initial content delivery and make pages easier for search engines and assistive technologies to interpret. Effective implementations should combine efficient server processing with semantic markup, good performance, and accessible client-side interactions. The concept is closely related to Client-Side Rendering and Static Site Generation.

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Client-Side Rendering

Static Site Generation

Technical SEO

FAQ

Server-Side Rendering

Which frameworks support server-side rendering?
React-based frameworks such as Next.js are common, allowing SSR, static generation, and mixed modes per route. SSR is also possible without a framework, for example through classic server-side templates. The tool matters less than the question of which pages get rendered in which way.
What are the drawbacks of server-side rendering?
SSR requires server operation, scaling, and a caching strategy, and it adds development complexity. Slow data queries delay the entire response. After loading, the browser has to make the page interactive through hydration, which can feel sluggish with heavy JavaScript.
Is server-side rendering mandatory for SEO?
No. Search engines can execute JavaScript to a limited extent. Still, SSR lowers the risk of content being indexed late or not at all, and it helps crawlers that do not run JavaScript. It is a safe choice for content-driven pages and rarely needed for applications behind a login.
When is server-side rendering better than static site generation?
For content that varies per request, such as personalized pages, prices, or inventory. Static site generation builds pages ahead of time and is faster and cheaper to serve as long as content rarely changes. SSR costs server time per request but delivers current data.
How does server-side rendering differ from client-side rendering?
With server-side rendering, the server delivers finished HTML; with client-side rendering, the browser assembles the page using JavaScript. SSR usually shows content sooner and is easier for crawlers to read. CSR shifts work to the client and needs more JavaScript, which noticeably burdens weaker devices.