Page speed
📖 3 min readUpdated 2026-04-19
Slow pages convert poorly. Every 1-second delay in load time can drop conversion 5-10%.
Targets
- Under 3 seconds load time
- Under 1.5s First Contentful Paint
- Under 2.5s Largest Contentful Paint
- Core Web Vitals green
Common bottlenecks
- Uncompressed images
- Too many JS/CSS files
- Slow server response
- Third-party scripts
Tools
- PageSpeed Insights (free)
- GTmetrix
- WebPageTest
Quick wins
- Compress images
- Lazy load below-fold content
- Remove unused scripts
- CDN
What to do with this
- Target under 2s Largest Contentful Paint (LCP), every second above that drops mobile conversion 7-10%
- Optimize images first, they're usually the biggest LCP contributor and easiest to fix
- Audit third-party scripts quarterly, marketing tags + pixels accumulate and each one adds load time
- Lazy-load below-fold images and iframes, first paint is what decides whether users stay
- Test mobile speed specifically on 3G/4G emulation, desktop speed lies about real user experience