Frontend & browser·Loading, assets and the critical path
you shipped only the Latin characters and the font file went from 300 kilobytes to 30.
Font subsetting
Also calledunicode-range, subset font
Stripping a font file down to the glyphs a site actually uses, or splitting it by `unicode-range` so the browser only downloads the ranges the page needs. Fonts are frequently the largest render-blocking assets on a content site, and most of every file is scripts nobody on that page will type. The risk is over-subsetting: a missing glyph falls back to a completely different face mid-sentence.