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SEO Analysis
SERP Preview Meta Tag Analyzer Schema Validator Heading Checker OG Preview
Technical SEO
Tech Stack Detector Security Headers PageSpeed Insights Redirect Checker Link Analyzer
Content & GEO
Word Counter Image SEO Checker Semantic HTML JS vs No-JS Robots.txt Analyzer llms.txt Generator
SERP & Keywords
SERP Checker Keyword Research SERP Overlap Lumina zu Chrome hinzufügen — Kostenlos
Free Performance Tool

PageSpeed Insights

Get Google Lighthouse scores for any URL — Performance, Accessibility, Best Practices, SEO, and Core Web Vitals. Powered by the free Google PSI API.

What this tool checks

This tool calls the Google PageSpeed Insights API directly from your browser — no proxy, no API key needed. Google runs a full Lighthouse audit and returns scores for Performance, Accessibility, Best Practices, and SEO, plus Core Web Vitals (FCP, LCP, TBT, CLS, Speed Index, TTI).

More tools

Security Headers

Check HTTP security headers.

Tech Stack

Detect 467 technologies.

Redirect Checker

Follow redirect chains.

FAQ

Is this free?+
Yes. Google's PageSpeed Insights API is free and requires no API key. This tool calls it directly from your browser.
Why is my score different than in Chrome DevTools?+
PageSpeed Insights runs Lighthouse on Google's servers, while DevTools runs it on your machine. Network conditions and hardware differ, leading to slightly different results.

PageSpeed data in every audit

Lumina integrates PageSpeed Insights directly into the extension with one-click testing.

Lumina zu Chrome hinzufügen — Kostenlos