google pagespeed

• Google PageSpeed ​​Insights (PSI) is a website speed and performance analysis tool offered by Google.
• It tests a web page and gives you:
• A performance score (0–100).
• Displays separate results for mobile and desktop devices.
• Uses the Lighthouse report (Google's open-source auditing tool).
• Measures the page's Core Web Vitals:
• LCP (Largest Contentful Paint) → How long does it take to load the largest content
• FID (First Input Delay) → How responsive is the page
• CLS (Cumulative Layout Shift) → Are there any content shifts?
• In other words, it measures not only speed but also metrics that affect the user experience.

what is the use of it

• It provides users with a faster and smoother experience.
• Google uses page speed and Core Web Vitals in its SEO ranking criteria.
• In other words, site speed = better user experience + SEO advantage.
• https://pagespeed.web.dev/