What are some ways to optimize front-end performance?

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Optimizing front-end performance is crucial for delivering fast, responsive, and user-friendly web applications. Here are some effective techniques:

1. Minimize HTTP Requests: Reduce the number of resources (scripts, styles, images) loaded by combining files, using CSS sprites, or lazy-loading non-critical assets.

2. Code Splitting: Break large JavaScript bundles into smaller chunks using tools like Webpack or Vite to load only what's needed for the current view.

3. Lazy Loading: Defer loading of images, videos, or components until they are needed (e.g., when they come into the viewport), improving initial load times.

4. Compress Assets: Use gzip or Brotli compression on HTML, CSS, and JavaScript files to reduce payload sizes and speed up delivery.

5. Use a CDN: Deliver static assets via a Content Delivery Network to reduce latency and increase availability by serving from the nearest server.

6. Optimize Images: Resize, compress, and serve images in modern formats like WebP or AVIF. Use srcset and responsive design techniques to serve appropriate sizes.

7. Reduce and Optimize JavaScript: Eliminate unused code, use tree-shaking, and minimize use of heavy libraries or frameworks.

8. Efficient CSS: Remove unused CSS, use shorthand properties, and consider CSS-in-JS or utility-first frameworks like Tailwind for leaner stylesheets.

9. Use Browser Caching: Set appropriate cache headers to store static assets locally in the browser for future visits.

10. Performance Monitoring: Use tools like Lighthouse, WebPageTest, or Chrome DevTools to audit and continuously improve performance.

These strategies help ensure a smooth user experience across devices and network conditions.

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