For cmhelmer.com:

  • [x] Reduce the file size (with subsetting and unicode-range)
  • [x] Load key font files as early as possible (with preloading)
  • [x] Manage FOUT and FOIT (with font-display)

Ollie Williams, “Three Techniques for Performant Custom Font Usage,” CSS-Tricks (Mar 5, 2018)