Website Speed Optimization: A Complete Guide

Website speed directly impacts your business. A 1-second delay in page load time leads to a 7% reduction in conversions. Here's how to make your site faster.

Why Speed Matters - Google uses page speed as a ranking factor - 53% of mobile users abandon sites that take over 3 seconds to load - Faster sites have higher conversion rates and lower bounce rates

Image Optimization Images often account for 50-70% of a page's total weight.

Best Practices: - Use modern formats (WebP, AVIF) - Compress images without visible quality loss - Implement lazy loading for below-the-fold images - Use responsive images with srcset

Code Optimization - Minify CSS, JavaScript, and HTML - Remove unused CSS and JavaScript - Defer non-critical JavaScript - Use code splitting to load only what's needed

Server Optimization - Use a CDN (Content Delivery Network) - Enable server-side caching - Use HTTP/2 or HTTP/3 - Choose hosting close to your audience

Core Web Vitals

LCP (Largest Contentful Paint) Aim for under 2.5 seconds. Optimize your largest visible element.

FID (First Input Delay) Aim for under 100ms. Minimize JavaScript execution time.

CLS (Cumulative Layout Shift) Aim for under 0.1. Set explicit dimensions for images and videos.

Tools for Testing Speed - Google PageSpeed Insights - GTmetrix - WebPageTest - Lighthouse (built into Chrome DevTools)