Eliminating Render-Blocking CSS & Optimizing Critical Rendering Path
A surgical method to inline critical path CSS and defer secondary stylesheets, slashing First Contentful Paint (FCP) below 800ms.
📂 Topic Hub • 2 Runbooks
CSS Performance Runbooks
Practical engineering runbooks, terminal benchmarks, and code fixes categorized under CSS Performance.
Eliminating Cumulative Layout Shift (CLS) Caused by Custom Web Fonts and FOIT/FOUT
Why swapping system fallbacks for custom web fonts shifts your entire page layout downwards, how font-display: swap can actually hurt your Core Web Vitals score, and how to achieve zero-CLS typography using modern font metric overrides.