PSI
SEO & PerformanceFree In-Browser / WASM

Google PageSpeed Insights

Audit website performance, Core Web Vitals, and mobile user experience.

Visit Official Website
🔒 External link to pagespeed.web.dev. Verified clean & active.
Account Required No signup needed
Pricing StructureFree
Execution ModeClient-Side (In-Browser)
Last Inspected2026-08-27

About Google PageSpeed Insights

Maintained by Google, PageSpeed Insights is the definitive web performance audit tool. It evaluates Largest Contentful Paint (LCP), Interaction to Next Paint (INP), and Cumulative Layout Shift (CLS) on both mobile and desktop. It provides actionable diagnostic recommendations to eliminate render-blocking resources, defer unused CSS/JS, and optimize images.

Best for: Webmasters, SEO specialists, and front-end engineers optimizing website loading speed.

Pros & Cons Analysis

What We Liked
  • Official Google metric used directly in search ranking evaluations
  • Separates real-world field metrics from synthetic lab audits
  • Detailed code-level opportunities to save kilobytes and milliseconds
Considerations & Limits
  • Low-traffic URLs will not have real-world CrUX field data available

Key Features & Capabilities

Real-world 28-day Chrome User Experience Report (CrUX) field data
Synthetic Google Lighthouse lab audit with performance score (0-100)
Breakdown of Core Web Vitals (LCP, INP, CLS, FCP, TTFB)
Identifies render-blocking CSS/JS and unoptimized images
Official PageSpeed API for CI/CD pipeline automated testing

Pricing & Plan Information

100% Free with Google Cloud API quotas.

Specifications

Supported Formats
URLJSON
Available Platforms
WebAPI
Developer / Team: Google

Associated Tasks

PageSpeed & Core Web Vitals AuditCompress Image (PNG, JPG, WebP)Convert to WebP / AVIFCan I Use Browser Compatibility

Ready to use Google PageSpeed Insights?

Launch the official Google PageSpeed Insights web app in a new tab to complete your document or image task.

Launch Google PageSpeed Insights

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