PageSpeed Insights API

The PageSpeed Insights API lets you analyze the performance of your website with a simple API. It offers tailored suggestions for how you can optimize your site, and lets you easily integrate PageSpeed Insights analysis into your development tools and workflow.


To call this service, we recommend that you use the Google-provided client libraries. If your application needs to use your own libraries to call this service, use the following information when you make the API requests.

Discovery document

A Discovery Document is a machine-readable specification for describing and consuming REST APIs. It is used to build client libraries, IDE plugins, and other tools that interact with Google APIs. One service may provide multiple discovery documents. This service provides the following discovery document:

Service endpoint

A service endpoint is a base URL that specifies the network address of an API service. One service might have multiple service endpoints. This service has the following service endpoint and all URIs below are relative to this service endpoint:


REST Resource: v5.pagespeedapi

runpagespeed GET /pagespeedonline/v5/runPagespeed
Runs PageSpeed analysis on the page at the specified URL, and returns PageSpeed scores, a list of suggestions to make that page faster, and other information.