Hi Guys, If you are running or developing a website you may encounter low Google page speed, So let's dig deeper into the technical guide of Google Page Speed Insights to ensure a good score.
Google defines page speed in two ways:
- How long it takes to display content above the fold.
- How long it takes a browser to fully render the page.
The tool has two main things:
- Field Data,” or the performance data
- Second, it measures your page performance via the Lighthouse API. This is called “Lab Data”
Field Data or Core Web Vitals :
- First Contentful Paint (FCP): The time it takes for the first text or image asset to load.
- Largest Contentful Paint (LCP): The time it takes for the largest text or image asset to load.
- First Input Delay (FID): The time it takes for the browser to respond to the user’s first interaction.
- Cumulative Layout Shift (CLS): This measures any movement of the page in the viewport.
Lab Data :
- Speed Index: The time it takes for the content to visually appear during page load.
- Time to Interactive: The time it takes for the page to become fully interactive.
- Total Blocking Time: The sum of time between FCP and full interactivity.
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