Web Font Performance Checklist: 10 Checks Before You Launch
Ten checks that keep web fonts fast: format, file count, subsetting, font-display, preloading, fallbacks, caching, and how to measure the result.
Guides tagged cls
Reduce Layout Shift from Web Fonts with size-adjust and ascent-override
Why text jumps when a web font loads, and how size-adjust, ascent-override, descent-override, and line-gap-override make the fallback take up the same space.