Lighthouse

Lighthouse is an open-source, automated tool designed to enhance the quality of web pages through automated auditing, performance metrics, and best practices. It offers audits covering various aspects such as performance, accessibility, progressive web apps, and SEO. Lighthouse can be run in Chrome DevTools, from the command line, or as a Node module.

Users provide a URL to audit, and Lighthouse runs a series of audits, generating a detailed report on the page's performance. Failing audits serve as indicators for improvements, each accompanied by a reference document explaining its significance and providing guidance on resolution.