A Detailed Post on How Mercado Libre Optimized Their Site for Web Vitals

Mercado Libre is the largest e-commerce and payments ecosystem in Latin America. This article summarizes the work done by Guille Paz, Pablo Carminatti, and Oleh Burkhay from Mercado Libre’s frontend architecture team to optimize one of the Core Web Vitals: First Input Delay (FID) and its lab proxy, Total Blocking Time (TBT).