Why Test Website Speed?
Speed testing gives you objective data to identify problems and track improvements. Without measurement, you're optimizing blindly.
Speed Testing Tools
- Google PageSpeed Insights - Lab and field data, Core Web Vitals
- WebPageTest - Detailed waterfall charts, filmstrip view, multiple locations
- GTmetrix - Combines Lighthouse and WebPageTest data
- BulkAudit - Test multiple URLs simultaneously
- Chrome DevTools - Network and Performance panels for debugging
Key Metrics to Monitor
- Core Web Vitals: LCP, INP, CLS
- Time to First Byte (TTFB)
- First Contentful Paint (FCP)
- Total Blocking Time (TBT)
- Speed Index