Lighthouse is an open-source, automated tool for improving the quality of web pages. You can run it against any web page, public or requiring authentication. It has audits for performance, accessibility, progressive web apps, SEO and more.
CSS Peeper is a CSS viewer tailored for Designers. Get access to the useful styles with our Chrome extension. Our mission is to let Designers focus on design, and spend as little time as possible digging in a code.