Why Your Website Is Slow (And How to Fix It)

A one-second delay in page load time can reduce conversions by 7%. After auditing 100+ websites, here are the most common performance killers and how to fix them.

Issue 1: Unoptimized Images

Images account for 60-80% of a page's total weight. The fix: Use WebP format, implement lazy loading, and serve appropriately sized images with srcset.

Issue 2: Render-Blocking Resources

JavaScript and CSS files that block rendering add significant time to your First Contentful Paint. Move non-critical scripts to the footer and use async/defer attributes.

Issue 3: No Caching Strategy

Without proper caching, every visitor downloads the same resources. Implement browser caching with appropriate Cache-Control headers and use a CDN for static assets.

Issue 4: Unused JavaScript

Modern JavaScript frameworks can include significant dead code. Use code splitting and tree shaking to eliminate unused JavaScript.

Measuring Success

Target these Core Web Vitals scores: