Google Lighthouse 8.0 Launched – June 2021 Update

Google updated Lighthouse 8.0, one of the important changes is to change the weight of different speed indicators.

These changes are expected to make it easier for most websites to obtain higher page speed scores.

The cumulative layout shift score may tend to be higher, while other indicators become more stringent.

Also read: google broad core algorithm update rolling out june 2, 2021 

Google Lighthouse 8.0

Lighthouse is a tool that helps publishers, developers, and SEOs measure page speed and other metrics related to accessibility and SEO.

Lighthouse provides support for the online PageSpeed ​​Insights tool and is available as a developer tool in Chrome.

The new Lighthouse version 8.0 will be released in Chrome 93, but it is now available on PageSpeed ​​Insights.

Changes to Google Lighthouse Tool

  • Performance score has been re-weighted
  • Total Blocking Time (TBT) Scoring is Stricter
  • First Contentful Paint (FCP) Scoring is Stricter
  • Cumulative Layout Shift (CLS) Scoring is Less Strict

Before and After Lighthouse Scores

Google has released a Lighthouse score calculator that shows the differences between version 8.0, 6, and 7 and version 5. Below is a screenshot comparing the exact same Lighthouse scores between different versions (6/7 and 8.0).

Scores Before Update:



Screenshot of Old Lighthouse Scores for comparison
Image Credit – Lighthouse Scoring Calculator

Scores After Update:

Screenshot of New Lighthouse Scores for comparison
Image Credit – Lighthouse Scoring Calculator


Lighthouse 8.0 Performance FAQ

Lighthouse Scoring Calculator

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