lighthouse

Lighthouse is an open-source command line tool developed by Google to improve web page performance and quality. It allows developers to audit their web pages against a set of performance, accessibility, progressive web app, best practice, and SEO standards. Lighthouse provides detailed reports on various aspects of a web page's performance, including metrics like first contentful paint, time to interactive, and speed index. It also analyzes accessibility aspects, checking for proper color contrast, keyboard navigation, and other considerations for users with disabilities. By running audits, Lighthouse provides suggestions and recommendations to optimize web pages for better performance, user experience, and visibility on search engines. Developers can customize the audits by selecting specific categories or including additional plugins specific to their needs. Lighthouse also offers capabilities to audit and validate Progressive Web Apps (PWAs), ensuring they meet the required standards for offline use, notifications, and other PWA features. It allows for easy integration into build processes and automation, making it suitable for continuous integration and deployment scenarios. Lighthouse is available as an npm package and can be run from the command line or integrated into other tools and frameworks. Its strong community support, regular updates, and continuous improvements make it a popular choice among developers for web page optimization and compliance testing.