Why Website Speed Matters
Website speed directly impacts:
- SEO rankings — Google has used page speed as a ranking factor since 2021
- Bounce rate — 53% of users leave a page if it takes more than 3 seconds to load
- Conversion rate — A 1-second improvement in load time can increase revenue by 7%
Free Website Speed Testing Tools
1. Google PageSpeed Insights
Google PageSpeed Insights is Google's official tool, analyzing websites against Core Web Vitals standards:
- LCP (Largest Contentful Paint) — Time to render the largest element (should be < 2.5s)
- FCP (First Contentful Paint) — Time to first visible content (should be < 1.8s)
- CLS (Cumulative Layout Shift) — Visual stability score (should be < 0.1)
- TBT (Total Blocking Time) — Time blocking user interaction (should be < 200ms)
- TTFB (Time to First Byte) — Server response time (should be < 600ms)
2. WebCheck (webcheck.shunify.com)
WebCheck combines speed testing with SEO in a single analysis. You get:
- Speed score powered by Google PageSpeed
- Analysis of 7 core SEO criteria
- Specific suggestions to fix each issue
How to Read PageSpeed Results
| Color | Meaning |
|---|---|
| 🟢 Green (90–100) | Good |
| 🟡 Yellow (50–89) | Needs Improvement |
| 🔴 Red (0–49) | Poor |
Common Causes of Slow Websites
- Unoptimized images — Use WebP format, compress images, add lazy loading
- Too much JavaScript — Remove unused plugins, use code splitting
- Weak hosting — High TTFB signals a slow server; consider upgrading hosting
- No CDN — A CDN serves content from the server closest to the user
- No caching — Enable browser caching and server-side caching
Next Steps
After checking, prioritize fixing Critical (red) issues first. Re-test after each change to track your improvement progress.