THE PERFORMANCE INEQUALITY GAP, 2026

Summary from the TLDR Dev newsletter

Despite devices and networks improving, the performance gap between rich and poor users is still growing. For 2026, the budget is ~150KiB of HTML/CSS/fonts and ~300-350KiB of JavaScript (gzipped) to serve the global 75th percentile, but less than half of mobile sites pass Core Web Vitals because developers keep shipping way more JavaScript than reasonable.