Passcore: A 3KB Solution to a 389KB Problem

Password validation has become an unexpected source of bundle bloat, with zxcvbn's 389KB footprint creating measurable performance drag on mobile registration flows. Passcore demonstrates that identical security detection is possible at just 3KB—reducing load time from 9.7ms to 0.2ms. For product teams optimizing Core Web Vitals and conversion rates, this presents a concrete opportunity to eliminate a significant bottleneck without sacrificing security rigor.