Google PageSpeed

Use Google PageSpeed Insights to analyze a public URL with Lighthouse. Choose desktop or mobile strategy and a locale, then retrieve performance, accessibility, SEO, and best-practice results. Performance metrics include First Contentful Paint, Largest Contentful Paint, and Speed Index.

Pass scores and diagnostics into reporting or alerting steps. An automated accessibility audit identifies some issues; it does not establish complete accessibility conformance.

Create an API key

Open the Google Cloud Console and create or select a project.
Enable the PageSpeed Insights API in the API Library.
Open Credentials and create an API key.
Paste the key into the Sim block.

See Google's PageSpeed API setup for project and authentication requirements.

Use the block

Analyze web pages for performance, accessibility, SEO, and best practices using Google PageSpeed Insights API powered by Lighthouse.

Actions

Google PageSpeed Analyze

Analyze a webpage for performance, accessibility, SEO, and best practices using Google PageSpeed Insights.

Inputs and outputs

Input

Parameter	Type	Required	Description
`apiKey`	string	Yes	Google PageSpeed Insights API Key
`url`	string	Yes	The URL of the webpage to analyze
`category`	string	No	Lighthouse categories to analyze (comma-separated): performance, accessibility, best-practices, seo
`strategy`	string	No	Analysis strategy: desktop or mobile
`locale`	string	No	Locale for results (e.g., en, fr, de)

Output

Parameter	Type	Description
`finalUrl`	string	The final URL after redirects
`performanceScore`	number	Performance category score (0-1)
`accessibilityScore`	number	Accessibility category score (0-1)
`bestPracticesScore`	number	Best Practices category score (0-1)
`seoScore`	number	SEO category score (0-1)
`firstContentfulPaint`	string	Time to First Contentful Paint (display value)
`firstContentfulPaintMs`	number	Time to First Contentful Paint in milliseconds
`largestContentfulPaint`	string	Time to Largest Contentful Paint (display value)
`largestContentfulPaintMs`	number	Time to Largest Contentful Paint in milliseconds
`totalBlockingTime`	string	Total Blocking Time (display value)
`totalBlockingTimeMs`	number	Total Blocking Time in milliseconds
`cumulativeLayoutShift`	string	Cumulative Layout Shift (display value)
`cumulativeLayoutShiftValue`	number	Cumulative Layout Shift numeric value
`speedIndex`	string	Speed Index (display value)
`speedIndexMs`	number	Speed Index in milliseconds
`interactive`	string	Time to Interactive (display value)
`interactiveMs`	number	Time to Interactive in milliseconds
`overallCategory`	string	Overall loading experience category (FAST, AVERAGE, SLOW, or NONE)
`analysisTimestamp`	string	UTC timestamp of the analysis
`lighthouseVersion`	string	Version of Lighthouse used for the analysis