PageSpeed Checker

The PageSpeed Checker runs your URL through Google PageSpeed Insights and reports your Core Web Vitals scores for both mobile and desktop.

Metrics Reported

• Performance Score - Overall 0-100 score
• First Contentful Paint (FCP) - When the first content appears
• Largest Contentful Paint (LCP) - When the main content finishes loading
• Cumulative Layout Shift (CLS) - Visual stability of the page
• Total Blocking Time (TBT) - How long the page is unresponsive to user input

Optimization Opportunities

The tool also reports specific opportunities to improve performance:

• Unused CSS and JavaScript
• Unoptimized images
• Render-blocking resources
• Third-party scripts slowing the page
• Font loading issues

Each opportunity includes an estimated savings in kilobytes or milliseconds.

API Key

For best results, configure a Google PageSpeed Insights API key in Settings > SEO Data. Without an API key, requests may be rate-limited.