Time to Interactive (TTI) is a performance metric that measures the time from when the page starts loading to when its main sub-resources have loaded and it is capable of reliably responding to user input quickly.

Speed Index (SI) is one of the Web Vitals but not a part of Core Web Vitals. It meaures the user-perceived page load speed. Let's learn more about SI, how you can measure it and the steps to improve Speed Index scores.

Total Blocking Time is a User-centric metric that is measured via Lab Tools. It is a part of Web Vitals but not of Core Web Vitals. This metric measures the input responsiveness.

Let's take a deep dive into TBT and understand how you can improve high TBT Scores.

React has long held a prominent position among the top JavaScript libraries. But when it comes to performance, libraries such as Svelte and Qwik have been gaining popularity.

Preact is another such library that is gaining traction due to its lightweight design and compatibility with React.

Enable Text Compression is a Lighthouse Performance Audit. Website Speed Testing Tools that are powered by Lighthouse such as PageSpeed Insights, SpeedVitals, and GTMetrix can trigger this audit.