⏳ Analyzing page speed... this may take 15–30 seconds
Why Page Speed Matters for SEO
Google's Core Web Vitals are official ranking factors. Slow pages rank lower, have higher bounce rates, and convert less. A 1-second delay in mobile load time reduces conversions by 20%. Google PageSpeed score directly affects your Search ranking.
Our tool checks load time, compression, caching, and key SEO elements. Add your free Google API key to unlock full Lighthouse scores including LCP, FCP, CLS and Total Blocking Time.
Core Web Vitals Explained
LCP — Largest Contentful Paint: < 2.5s good, > 4s poor. How long until the main content loads.
FCP — First Contentful Paint: < 1.8s good. Time until first text or image appears.
CLS — Cumulative Layout Shift: < 0.1 good. Measures visual stability — do elements jump around?
TBT — Total Blocking Time: < 200ms good. How long the main thread is blocked from user input.
Frequently Asked Questions
What is a good PageSpeed score?+
90–100 is excellent (green), 50–89 is needs improvement (orange), 0–49 is poor (red). Aim for 90+ on both mobile and desktop. Mobile is more important as Google uses mobile-first indexing.
Why is my mobile score lower than desktop?+
Mobile devices have slower CPUs and often use slower networks. Google weights mobile performance more heavily because it uses mobile-first indexing. Common mobile-specific issues include large images not optimized for smaller screens and render-blocking scripts.
How do I get a Google PageSpeed API key?+
Go to console.cloud.google.com, create a project, enable the "PageSpeed Insights API", and create an API key. The free tier gives you 25,000 requests per day — more than enough for any website audit tool.
What is the fastest way to improve page speed?+
The most impactful fixes are: enable GZIP compression (saves 60–70% on HTML/CSS/JS), optimize and compress images (convert to WebP), defer non-critical JavaScript, use a CDN like Cloudflare (free tier), and enable browser caching.