By Linkflu

Website Speed Test & Performance Analysis

Analyze your website with Core Web Vitals (LCP, CLS, INP), Lighthouse-style metrics, and detailed waterfall charts. Free GTmetrix & PageSpeed alternative.

Test Results

Your recent performance tests and Core Web Vitals metrics

https://app.linkflu.com12/12/2025, 10:48:06 AM

Advanced Audits (Coming Soon)

Visualizations & Real User Data (Coming Soon)

Filmstrip
Visual timeline of your page loading. See exactly when elements appear and the page stabilizes.
HAR Export
Export network data in HAR format. Import into other tools or share for detailed analysis.
Multi-Location Testing
Test from multiple geographic regions (US, EU, Asia). See how your site performs globally.
Real User Monitoring
Collect real user metrics via lightweight JavaScript beacon. Compare lab data vs real-world performance.

What is Mebmetrics?

Mebmetrics is a free website speed testing tool that combines the power of Lighthouse, GTmetrix, and Google PageSpeed Insights. Measure Core Web Vitals (LCP, CLS, INP), analyze performance metrics, and optimize your website for better user experience and SEO rankings.

Core Web Vitals Explained

Core Web Vitals are three key metrics that Google uses to measure user experience:

  • LCP (Largest Contentful Paint): Measures how long it takes for the largest visual element to render. Target: < 2.5s
  • CLS (Cumulative Layout Shift): Measures unexpected layout changes. Target: < 0.1
  • INP (Interaction to Next Paint): Measures responsiveness to user input. Target: < 200ms

Lighthouse vs GTmetrix vs PageSpeed Insights

FeatureLighthouseGTmetrixWebmetrics
Core Web Vitals✓✓✓
Free✓Limited✓
Waterfall ChartsBasic✓✓
Real User MonitoringCrUX (Public)LimitedComing Soon
Performance Audits✓✓Coming Soon

Why Website Speed and Core Web Vitals Matter for SEO

Google treats Core Web Vitals as part of page experience signals, meaning better scores can support higher visibility in search results.

Faster sites improve engagement, reduce bounce rates, and help protect conversion rates, especially on slower mobile networks.

How to Use Webmetrics

  1. Enter the target page URL into the Webmetrics test field on metrics.linkflu.com.
  2. Complete any security or captcha verification required before running the test.
  3. Review Core Web Vitals, performance metrics, and the network waterfall to spot bottlenecks.
  4. Compare results against Lighthouse and GTmetrix benchmarks to prioritize improvements.
  5. Implement optimizations such as reducing JavaScript payloads, improving caching, and compressing images to enhance scores.

Key Performance Metrics: TTFB, FCP, Waterfall Charts

Time to First Byte (TTFB) reflects how quickly the server responds to requests, while First Contentful Paint (FCP) marks when initial content appears on-screen.

Waterfall charts visualize how each resource loads so developers can diagnose slow scripts, blocking CSS, or heavy images.

When should I use Webmetrics instead of running Lighthouse locally in Chrome DevTools?

Webmetrics is ideal when you want consistent, shareable tests that do not depend on your local machine’s hardware or network.

Local Lighthouse runs are great for quick checks, while Webmetrics provides a repeatable environment and nicer reporting for teams and clients.

How does Webmetrics compare with WebPageTest, Pingdom, and SpeedVitals for performance analysis?

Tools like WebPageTest, Pingdom, and SpeedVitals offer deep lab testing and monitoring, while Webmetrics focuses on a streamlined developer workflow with Core Web Vitals front and center.

Using Webmetrics alongside these tools can give you both quick insights and more advanced multi-location or filmstrip-style diagnostics when needed.

Start Optimizing Your Website Today

Get free performance insights with our Lighthouse and GTmetrix alternative