Website speed is one of the most critical ranking factors in modern SEO. However, many developers overlook WebFont loading strategies, which directly impact rendering performance and user experience.
In this comprehensive guide, PT Code Hero Indonesia explains how to reduce FOIT and FOUT effectively while improving Core Web Vitals and search engine visibility.
Understanding FOIT and FOUT
FOIT (Flash of Invisible Text)
FOIT occurs when browsers hide text while waiting for the webfont to download.
FOUT (Flash of Unstyled Text)
FOUT happens when fallback fonts display first, then switch to the webfont.
Why WebFont Optimization Matters for SEO
- Improves Largest Contentful Paint (LCP)
- Reduces Cumulative Layout Shift (CLS)
- Enhances Time to Interactive (TTI)
- Creates professional UX
Best WebFont Loading Strategies
1. Use font-display: swap
@font-face {
font-family: 'CustomFont';
src: url('/fonts/customfont.woff2') format('woff2');
font-display: swap;
}
2. Preload Critical Fonts
3. Use WOFF2 Format
WOFF2 offers better compression and faster loading.
4. Limit Font Weights
Avoid loading unnecessary font variations.
5. Self-Host Fonts
Reduces external dependency and increases control.
Impact on Core Web Vitals
- Faster LCP
- Lower CLS
- Better perceived performance
Conclusion
Optimizing WebFont loading is a technical yet essential step in achieving top Google rankings and delivering premium user experience.
Need Professional Performance Optimization?
PT Code Hero Indonesia provides advanced website performance audits and SEO optimization to help your business grow globally.
