Start using Web.Dev Measure
The tag line from the Measure home page is:
See how well your website performs. Then, get tips to improve your user experience. Sign in to track your progress over time.
You start by running tests on your site: enter your site's URL to see how well it performs across all audits. Each test comes with recommendations to improve your site's results.
How Measure... measuresLighthouse, an open-source, automated tool for improving the quality of web pages. All tests are run using a simulated mobile device with a quad-core processor and throttled to a fast 3G network.
The Measure tool divides its tests into four key areas:
Audits for metrics like first paint and time to interactive to determine lag.
- Best Practices
Looks for everything from HTTPS usage to correct image aspect ratios.
Checks for best practices to ensure your site is discoverable.
Checks for common issues that may prevent users from accessing your content.
While there are lots of website tools out there, including those built into Google's own analytics, Measure has key testing wrapped up in a convenient and self-contained online console. The best thing about it? It's free!