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
85%
Desktop Performance
100%

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 s0.6 s< 2.5 s
First Input Delay640 ms130 ms< 100ms
Cumulative Layout Shift00.037 0.1

Opportunities

Largest Contentful Paint

MobileDesktop
Score99%99%
Timing1.7 s0.6 s

Total Blocking Time

MobileDesktop
Score50%100%
Timing590 ms40 ms

Time to Interactive

MobileDesktop
Score91%100%
Timing3.6 s0.9 s

Max Potential First Input Delay

MobileDesktop
Score3%91%
Timing640 ms130 ms

Reduce unused JavaScript

MobileDesktop
Score88%100%
InsightPotential savings of 27 KiBPotential savings of 28 KiB

Serve images in next-gen formats

MobileDesktop
Score100%91%
InsightPotential savings of 131 KiB

Preload Largest Contentful Paint image

MobileDesktop
Score0%100%

JavaScript execution time

MobileDesktop
Score92%100%
Timing1.2 s0.2 s

Minimizes main-thread work

MobileDesktop
Score93%100%
Timing1.8 s0.4 s

Largest Contentful Paint image was not lazily loaded

MobileDesktop
GradeFailPass