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haitham medhat
haitham medhat

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𝗘𝗻𝗵𝗮𝗻𝗰𝗶𝗻𝗴 𝗣𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲 𝗮𝗻𝗱 𝗥𝗲𝗱𝘂𝗰𝗶𝗻𝗴 𝗟𝗖𝗣 𝗧𝗶𝗺𝗲 𝗶𝗻 𝗡𝗲𝘅𝘁.𝗷𝘀.

When optimizing the performance of a homepage in Next.js, it's essential to minimize Largest Contentful Paint (LCP) and First Contentful Paint (FCP) times. LCP measures the time it takes for the largest visible element (like an image or block of text) to load, while FCP measures how quickly the first content element appears on screen.
To achieve better performance, reduce LCP and TTFB (Time to First Byte), one effective approach is to split components and lazy load non-critical sections after the initial render. Here's how:

𝟭. 𝗥𝗲𝗻𝗱𝗲𝗿𝗶𝗻𝗴 𝗖𝗿𝗶𝘁𝗶𝗰𝗮𝗹 𝗖𝗼𝗺𝗽𝗼𝗻𝗲𝗻𝘁𝘀 𝗙𝗶𝗿𝘀𝘁
The first component that appears on your homepage should be visible immediately. For other sections, they can load after the first render, reducing time to display initial content. If you have multiple sections, like six, and only the first one needs to be visible initially, use dynamic imports for the remaining sections.
Example :

import dynamic from "next/dynamic"; 
const Features = dynamic(() => import("./_components/home/Features "), {
 ssr: false,
 loading: () => <p>Loading...</p>,
});
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By doing this, you prevent unnecessary JavaScript from loading during the first render, which helps reduce TTFB and speed up FCP.

  1. 𝗢𝗽𝘁𝗶𝗺𝗶𝘇𝗶𝗻𝗴 𝗟𝗖𝗣 𝘄𝗶𝘁𝗵 𝗜𝗺𝗮𝗴𝗲 𝗣𝗿𝗲𝗹𝗼𝗮𝗱𝗶𝗻𝗴
    Images are often responsible for LCP. To improve performance, load important images earlier. The Next.js Image component allows you to set the priority prop on critical images:
    This ensures that critical images are fetched as early as possible, reducing LCP times.

  2. 𝗥𝗲𝗱𝘂𝗰𝗶𝗻𝗴 𝗝𝗮𝘃𝗮𝗦𝗰𝗿𝗶𝗽𝘁 𝗮𝗻𝗱 𝗖𝗼𝗺𝗽𝗼𝗻𝗲𝗻𝘁 𝗟𝗼𝗮𝗱
    Split your code into smaller, lazily-loaded components. Using dynamic imports with ssr: false delays the loading of non-critical sections, making the page interactive faster and reducing JavaScript execution time.

  • 𝗙𝗶𝗻𝗮𝗹 𝗧𝗵𝗼𝘂𝗴𝗵𝘁𝘀 :- To optimize your homepage's performance: Render critical components first and lazy load others with dynamic imports. Use the priority prop for images to load critical images earlier. Split components and load JavaScript lazily to reduce initial load time. These strategies will improve LCP, FCP, and overall performance, providing a faster and more responsive user experience

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