Page Speed Checker
Opens Google PageSpeed Insights in a new tab — the industry-standard tool for measuring Core Web Vitals and getting actionable improvement suggestions.
Core Web Vitals Reference
Measures loading performance. Marks the point when the largest text or image element is rendered.
Measures responsiveness. Reports the latency of all click, tap, and keyboard interactions.
Measures visual stability. Quantifies unexpected layout shifts that occur during the page's lifecycle.
Measures when the browser renders the first piece of DOM content after a user navigates to the page.
Measures the time it takes the server to respond to a request with the first byte of a response.
Quick Optimization Tips
Images
- •Use modern formats (WebP, AVIF) — save 25–50% over JPEG/PNG
- •Set explicit width/height attributes to avoid layout shifts
- •Lazy-load below-the-fold images with loading="lazy"
JavaScript
- •Remove unused JavaScript — use code splitting and tree-shaking
- •Defer non-critical scripts with defer or async attributes
- •Minify and compress JS bundles
CSS
- •Inline critical CSS and defer the rest
- •Remove unused CSS rules
- •Avoid render-blocking stylesheets in <head>
Server
- •Enable HTTP/2 or HTTP/3
- •Use a CDN for static assets
- •Add proper Cache-Control headers
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