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Page Speed Analyzer – Core Web Vitals & Performance Checker | HP ToolsHub

Page Speed & Core Web Vitals Analyzer

Use Page Speed Analyzer online for free. Fast, client-side processing directly in your browser with zero file uploads to external servers.

Supported Formats & Specifications

PDFJPGPNGWebPSVG

How to Use Page Speed & Core Web Vitals Analyzer

  1. 1
    Input Webpage URL Type the full URL of the webpage you wish to test.
  2. 2
    Run Performance Benchmark The analyzer measures time to first byte (TTFB), DOM render time, and asset payload weights.
  3. 3
    View Optimization Recommendations Get practical steps to optimize JavaScript, defer CSS, and compress media.

Key Features & Capabilities

  • ✓ Core Web Vitals metrics evaluation: LCP (<2.5s), INP (<200ms), and CLS (<0.1).
  • ✓ Asset size breakdown: HTML, CSS, JavaScript, and images.
  • ✓ Cache-control header and compression audit (Gzip/Brotli).
  • ✓ Actionable recommendations to achieve sub-second load times.

Privacy & Local Processing Guarantee

All processing occurs 100% on your device using client-side WebAssembly. No files are uploaded to our servers.

Frequently Asked Questions

What are good Core Web Vitals scores?

Good scores are: Largest Contentful Paint (LCP) under 2.5 seconds, Interaction to Next Paint (INP) under 200ms, and Cumulative Layout Shift (CLS) under 0.1.

How does image compression affect page speed?

Optimizing images to modern WebP formats and proper dimensions is typically the highest-impact improvement for web performance.