KissFront is a web performance monitoring tool running Lighthouse continuously or on-demand (using Lighthouse as a service) to monitor your website performance and get insights on speed with modern performance metrics. Lighthouse is an open-source automated tool for analysing and improving the quality of web pages with audits for performance, accessibility, progressive web apps, SEO and best practices.

Time to First Meaningful Paint (TTFMT) is a modern performance metric introduced by few engineers from Google, and is the time to paint the main content that users are interested in, so the thing the users came here for. Rendering some background color can be much easier and faster, but that’s definitely not what the users was looking for when they entered your website.