Release Notes

Release notes and minor bug fixes will be posted here.

Version 1

The initial version of the API. This release includes support for localization in 40 languages.

On October 29, 2013, the ruleScore field, which has been deprecated in PageSpeed Insights for over a year, was removed from the API. We recommend that clients use the ruleImpact field instead.

Version 2

v2 of the PageSpeed Insights API was released in January 2015. It adds support for rule groups, such as 'SPEED' or 'USABILITY'.