HomeIT GlossaryNext.jsHow does server-side rendering in Next.js affect application performance?

How does server-side rendering in Next.js affect application performance?

Server-side rendering (SSR) in Next.js improves application performance by reducing time-to-first-byte (TTFB) and ensuring pages are fully loaded before reaching the user. Unlike React’s client-side rendering (CSR), which requires JavaScript execution before content appears, SSR delivers pre-rendered HTML instantly.

SSR is particularly useful for dynamic content, e-commerce sites, and SEO-driven applications. It reduces perceived load time, making apps feel faster and more responsive, while also reducing JavaScript execution on the client side, improving performance on low-end devices.

Key Takeaways:

SSR reduces page load time & improves Core Web Vitals
Pre-rendered pages boost SEO & UX
Less client-side JavaScript improves performance

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