PageSpeed Insights reports on the performance of a page on mobile and desktop devices, and provides suggestions on how that webpage may be improved. Following SEO best practices, get your PageSpeed score and use PageSpeed suggestions to make your web site faster through great online tool.
Lighthouse separates its audits into 3 sections:
- Passed Audits indicates the audits that have been passed by the page
How scores are color-coded :
The metrics scores and the perf score are colored according to these ranges:
- 0 to 49 (red): Poor
- 50 to 89 (orange): Needs Improvement
- 90 to 100 (green): Good
To provide a good user experience, sites should strive to have a good score (90-100). A "perfect" score of 100 is extremely challenging to achieve and not expected. For example, taking a score from 99 to 100 needs about the same amount of metric improvement that would take a 90 to 94
How Lighthouse calculate your performnce score. The metrics contribute to your Lighthouse Performance score: First Contentful Paint, First Meaningful Paint, Speed Index, First CPU Idle, Time to Interactive, Max, Potential First Input Delay, Total Blocking Time and Largest Contentful Paint
Questions relating to the PageSpeed Insights tool from Google, learn more...