Insights

Google Lighthouse Performance

The Google Lighthouse performance score is a metric that measures the speed and performance of a website. It’s an overall score that ranges from 0 to 100 and is generated based on a number of different performance metrics, such as the time it takes for a website to load, the time it takes for a website to become interactive, the size of the resources used by the website, and other factors that impact the user experience.

A high performance score in Google Lighthouse indicates that a website is fast and responsive, which can lead to a better user experience and improved search engine rankings. On the other hand, a low performance score can indicate that a website is slow and unresponsive, and can negatively impact the user experience.

Mobile Performance
99%
Desktop Performance
99%

Core Web Vitals

Core Web Vitals are a set of specific factors that Google considers important in a webpage’s overall user experience. Core Web Vitals are made up of three specific page speed and user interaction measurements: Largest Contentful PaintFirst Input Delay, and Cumulative Layout Shift.

VitalMobileDesktopTarget
Largest Contentful Paint1.7 s0.4 s< 2.5 s
First Input Delay60 ms20 ms< 100ms
Cumulative Layout Shift00.016 0.1

Opportunities

Largest Contentful Paint

MobileDesktop
Score99%100%
Timing1.7 s0.4 s

Speed Index

MobileDesktop
Score89%90%
Timing3.5 s1.3 s

Eliminate render-blocking resources

MobileDesktop
Score94%100%
InsightPotential savings of 70 ms

Properly size images

MobileDesktop
Score58%93%
InsightPotential savings of 118 KiBPotential savings of 96 KiB

Serve images in next-gen formats

MobileDesktop
Score48%93%
InsightPotential savings of 187 KiBPotential savings of 123 KiB

Reduce initial server response time

MobileDesktop
GradeFailFail
InsightRoot document took 1,470 msRoot document took 1,260 ms

Avoid serving legacy JavaScript to modern browsers

MobileDesktop
Score88%100%
InsightPotential savings of 11 KiBPotential savings of 11 KiB