Font Loading & Delivery Strategies
Prioritize LCP-critical font requests, reduce payload with subsetting, and control FOIT/FOUT behavior through `font-display`, preload, and runtime APIs.
Performance + Readability
Modern web typography, engineered for Core Web Vitals.
This site distills practical workflows for font delivery, baseline alignment, fallback stacks, and variable font architecture.
Use the section hubs below to jump directly into implementation patterns, diagnostics, and production-safe code examples.
Typography Fundamentals & System Architecture
Build resilient typographic systems with baseline-aligned metrics, tokenized scales, responsive rhythm, and variable font axis constraints.
All Topics
- Browser Font Caching Mechanics
- Css Font Loading Api Implementation
- Font Display Values Explained
- When To Use Font Display Swap Vs Optional
- Fout Vs Foit Mitigation
- Eliminating Fout With Css Font Loading Api
- Preloading Resource Hints
- Preloading Critical Fonts Without Blocking Lcp
- Unicode Range Subset Loading
- How Unicode Range Reduces Font Payload Size
- Variable Font Loading Techniques
- Loading Variable Fonts With Font Weight Ranges
- Fallback Font Stack Design
- Designing Accessible Fallback Font Stacks
- Font Metrics Baseline Alignment
- How To Calculate Cap Height For Web Typography
- Understanding X Height Differences In Web Fonts
- Line Height Vertical Rhythm
- Optical Sizing Variable Axes
- Best Practices For Optical Sizing In Css
- Type Scale Modular Grids
- Implementing A Fluid Type Scale With Clamp