As of Oct 20, 2025, PageSpeed Insights and the API have been updated to Lighthouse 13.0.

The CPU throttling factor for PageSpeed Insights has been adjusted to account for the low CPU performance benchmarks typical in PageSpeed Insights production environments. In general, this should result in increased lab data TBT scores for sites on mobile. Field data and desktop scores should not be affected.

As of May 10, 2024, PageSpeed Insights and the API have been updated to Lighthouse 12.0. Please be aware that there are some breaking changes in the API response, including the removal of the PWA category.

As of Aug 9, 2023, PageSpeed Insights and the API have been updated to Lighthouse 11.0. Please be aware that there are some breaking changes in the API response.

`EXPERIMENTAL_INTERACTION_TO_NEXT_PAINT` is no longer in the API response. `INTERACTION_TO_NEXT_PAINT` has the same data, and should be used for the page's field INP.

Interaction to Next Paint (INP) is no longer an experimental metric, and is now a pending Core Web Vital. This change is reflected in UI and API.

Announcing a new feature in the UI: shareable links! Now, analyzing a URL will take you to a new /analysis path, with a unique identifier in the link.

PageSpeed Insights and the API have been updated from Lighthouse 9.6.x to Lighthouse 10.0.x. There are some breaking changes in the API response, including a new location for full-page-screenshot and updated Url properties.

The UI now has more Lighthouse categories in the lab data section, in addition to Performance. The added categories are Accessibility, Best Practices, and SEO.

Introducing two new experimental field metrics to both the API and UI: Interaction to Next Paint (INP) and Time to First Byte (TTFB). These field metrics are currently experimental, but are now available for users to try out.