- Basic Performance Metrics
- Single Location Test
- Desktop Device Only
- Limited Insights
Boost Your Website Speed
Is your site loading slow?
Identify Performance Hitches
Solutions for a Swift Website
The Perks of Speed Recommendations
Why prioritize website speed insights?
Custom-tailored Speed Guidelines
Benefits Beyond Speed
Master Google's Web Vitals for SEO
The key to soaring SEO rankings?
The Trinity of Web Vitals
Measure & Master with Precision
Choose LoadFocus for Stellar Speed Tests ๐
Desire crystal-clear insights?
Comprehensive Metrics
User-Friendly Interface
Unlock Global Insights ๐
Puzzled about global performance variations?
Geographically Diverse Test Locations
Optimize for a Global Audience
How LoadFocus website speed test compares
Most page-speed tools cover the basics. LoadFocus adds what they leave on the table, global testing regions, history charts, regression alerts, and CI/CD hooks, without a paywall.
| Feature | LoadFocus | PageSpeed Insights | GTmetrix | WebPageTest |
|---|---|---|---|---|
| Free tier (no signup) | Yes | Yes | Limited | Yes |
| Test from 26+ global regions | Yes | , | , | Yes |
| Lighthouse scores | Yes | Yes | Yes | Yes |
| Core Web Vitals (LCP, INP, CLS) | Yes | Yes | Yes | Yes |
| History + comparison over time | Yes | , | Yes | , |
| Email alerts on score regression | Yes | , | Yes | , |
What page speed metrics matter, and why
Your speed test surfaces several numbers. The ones that move SEO + user experience:
Largest Contentful Paint (LCP)
How fast the main content of your page loads. Good: under 2.5 seconds. Slow LCP correlates with bounce rate and lost conversions.
Cumulative Layout Shift (CLS)
Measures unexpected visual shifts during page load, buttons jumping, content moving as images arrive. Good: under 0.1.
Interaction to Next Paint (INP)
Measures responsiveness, how quickly the page reacts to clicks, taps, and key presses. Replaced FID in March 2024. Good: under 200 ms.
Time to First Byte (TTFB)
How quickly your server responds to the request. Slow TTFB caps how fast LCP can ever be. Good: under 800 ms.
Website speed testing FAQ
What is a website speed test?
A website speed test measures how fast a page loads and becomes interactive from a real user's perspective. It typically runs Lighthouse against your URL from a controlled browser, captures Core Web Vitals (LCP, INP, CLS), and surfaces opportunities to make the page faster.
What's a good page speed score?
Lighthouse Performance score of 90 or higher is good. Core Web Vitals: LCP under 2.5 seconds, INP under 200 ms, CLS under 0.1. Sites passing these thresholds tend to rank higher and convert better than those that don't.
How often should I test my website's speed?
For static marketing pages, weekly is enough. For frequently-changing apps, run a check on every deploy via CI. LoadFocus monitoring runs the test on a schedule and alerts on regressions, so you don't have to remember.
What's the difference between lab data and field data?
Lab data (Lighthouse, LoadFocus) measures performance in a controlled environment, same device, same network. Field data (Chrome User Experience Report) is what real users actually experience. Lab catches regressions before deploy; field tells the truth about your real-user mix.
Why does my site fail Core Web Vitals?
The usual suspects: oversized images, render-blocking JavaScript, unsized images causing layout shift, slow server response (TTFB), and heavy third-party scripts. The speed test report tells you exactly which apply to your page.
Does page speed affect Google rankings?
Yes. Core Web Vitals are part of Google's page experience signal. Pages passing CWV thresholds get a ranking advantage in competitive queries. They also have lower bounce rates and higher conversion, so the SEO and UX wins compound.




