Performance

What font hinting does, where it still matters, how much space removing it can save, and how to decide for your own site by testing both versions.

Ten checks that keep web fonts fast: format, file count, subsetting, font-display, preloading, fallbacks, caching, and how to measure the result.

Remove the characters your site never uses to make font files smaller, then use unicode-range so browsers only download the subsets a page needs.

What each font-display value does while a web font loads, and how to pick one for body text, headings, and icons without hiding text or jolting the layout.

The exact preload tag for a web font, why it needs crossorigin, and the cases where preloading slows your page down instead of speeding it up.

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.