Website performance affects UX, SEO, and conversions. Page speed is just the beginning. Compress images without losing quality. Use lazy loading for media. Minify CSS, JS, and HTML files. Implement caching for static assets. Use a content delivery network (CDN). Optimize your hosting server settings. Eliminate render-blocking scripts. Audit third-party scripts for slowdowns. Prioritize mobile performance. Monitor performance with tools like Lighthouse. Regularly test with real user data. Use font-display for faster text rendering. Reduce redirects and HTTP requests. Aim for a fast, seamless user experience across devices.