字体优化完全指南(2026):用 variable fonts、size-adjust 与 font-display 消灭 FOUT 和 CLS
从 30 多次电商审计的真实数据出发,讲清楚 2026 年字体优化的每一步:可变字体节省 40-70% 体积、preload 提前 300ms、size-adjust 把 CLS 降到 0.001,CJK unicode-range 分片实战,Next.js 15 next/font 三行搞定自托管。
Priya is a frontend performance engineer with 11 years of experience untangling slow React and Next.js apps. She spent four years at Shopify on the Storefront Performance team, where she drove a project that cut median LCP across the Online Store theme platform from 3.4s to 1.8s by rewriting the critical render path and killing third-party tag bloat. Before that she shipped checkout perf work at Klarna. These days she runs an independent practice helping Series B/C ecommerce companies hit a 75th-percentile INP under 200ms before they bother with redesigns. She has a soft spot for Lighthouse CI in pull-request gates and writes most of her perf budgets in YAML. Outside work she's slowly restoring a 1998 Honda CB400 and arguing with her partner about whether RUM beats lab data (it does).
从 30 多次电商审计的真实数据出发,讲清楚 2026 年字体优化的每一步:可变字体节省 40-70% 体积、preload 提前 300ms、size-adjust 把 CLS 降到 0.001,CJK unicode-range 分片实战,Next.js 15 next/font 三行搞定自托管。
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