Website Development
Optimizing Web Fonts for Speed and Layout Stability
2026-07-22 • 1 min read
Custom web fonts can block page rendering if they load slowly, resulting in flashes of unstyled text (FOUT).
Optimize font file sizes by loading specific character subsets (like Latin characters only) and using WOFF2 compression.
Configure the font-display: swap CSS property to let the browser display system fonts while custom fonts download.
Load fonts locally or use optimized services like next/font to pre-fetch files, eliminating extra DNS queries.
Matching fallback font shapes to your custom designs limits layout shifts when custom fonts finish loading.
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Tags: fonts, performance, web design, next.js, css
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