Overview
Speed Index is a page load performance metric that shows you how quickly the contents of a page are visibly populated. The lower the score, the better.
Recommendations
To lower your Speed Index score, you need to optimize your page to visually load faster. Two good starting places are:
More information
Lighthouse uses a node module called Speedline to generate the Speed Index score.
For more information on the algorithms and methodologies behind Speed Index, see Speed Index.
The target score is computed by a cumulative distribution function of a log-normal distribution. Check out the comments in the source of the audit if you need to know more.
Feedback
Was this page helpful?
Yes
What was the best thing about this page?
It helped me complete my goal(s)
Thank you for the feedback. If you have specific ideas on how to improve this page, please
create an issue.
It had the information I needed
Thank you for the feedback. If you have specific ideas on how to improve this page, please
create an issue.
It had accurate information
Thank you for the feedback. If you have specific ideas on how to improve this page, please
create an issue.
It was easy to read
Thank you for the feedback. If you have specific ideas on how to improve this page, please
create an issue.
Something else
Thank you for the feedback. If you have specific ideas on how to improve this page, please
create an issue.
No
What was the worst thing about this page?
It didn't help me complete my goal(s)
Thank you for the feedback. If you have specific ideas on how to improve this page, please
create an issue.
It was missing information I needed
Thank you for the feedback. If you have specific ideas on how to improve this page, please
create an issue.
It had inaccurate information
Thank you for the feedback. If you have specific ideas on how to improve this page, please
create an issue.
It was hard to read
Thank you for the feedback. If you have specific ideas on how to improve this page, please
create an issue.
Something else
Thank you for the feedback. If you have specific ideas on how to improve this page, please
create an issue.