Enter a URL to test its loading speed and Core Web Vitals.
Performance Optimization Checklist:
Images
- Compress images (WebP format)
- Use lazy loading
- Specify width and height
- Use a CDN
CSS & JavaScript
- Minify CSS and JS
- Remove unused CSS
- Defer non-critical JS
- Use code splitting
Caching
- Set long cache-control headers
- Use a CDN for static assets
- Enable browser caching
Core Web Vitals
- Optimize LCP < 2.5s
- Minimize CLS < 0.1
- Improve INP < 200ms
- Preload critical resources
About Page Speed Checker
Page Speed Checker tests your website's load time and returns Core Web Vitals metrics — including Largest Contentful Paint (LCP), First Input Delay (FID), and Cumulative Layout Shift (CLS) — along with actionable recommendations to improve performance and Google's page experience score.
How to Use Page Speed Checker
- 1
Enter your page URL
Type or paste the URL of the web page you want to test.
- 2
Run the speed test
Click 'Test Speed' to analyze the page and collect performance metrics. The test takes 20–60 seconds.
- 3
Review scores and fix issues
Examine your Core Web Vitals scores and the prioritized list of optimization recommendations, starting with the highest-impact items.
Common Use Cases
- Identifying performance bottlenecks on a slow-loading landing page
- Checking Core Web Vitals scores before a site launch to meet Google's requirements
- Comparing page speed before and after optimization changes
- Auditing client websites for performance issues as part of an SEO engagement
Frequently Asked Questions
What are Core Web Vitals and why do they matter?
What is a good page load time?
What are the most common ways to speed up a web page?
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