This may enhance the experience for users of assistive technology, like a screen reader." "description": "These are opportunities to improve the semantics of the controls in your application. "title": "Elements Have Discernible Names", "description": "Consider adding preconnect or dns-prefetch resource hints to establish early connections to important third-party origins. "title": "Preconnect to required origins", If your latency is higher than 50 ms, users may perceive your app as laggy. "description": "The score above is an estimate of how long your app takes to respond to user input, in milliseconds, during the busiest 5s window of page load. "networkUserAgent": "Mozilla/5.0 (Macintosh Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/.0 Safari/537.36", See Response to learn moreĪbout each of the properties in the response object. To try out the PageSpeed Insights API from the command line: To make calls to the PageSpeed Insights API without writing any code, check out the The API key is safe for embedding in URLs it doesn't need any encoding. Plan on using the API in an automated way and making multiple queries per second, you'llĪfter you have an API key, your application can append the query parameter If you're just trying out the PageSpeed Insights API, you don't need an API key. This tutorial assumes that you have general knowledge of command line interfaces and web This tutorial covers the latest version of the PageSpeed Insights API, which The PageSpeed Insights API returns real-world data from the Chrome UserĮxperience Report and lab data from Lighthouse. Learn how to convert the page into a Progressive Get suggestions on how to improve the page's performance, accessibility, and SEO.
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