<!DOCTYPE html> <html class="reftest-wait"> <style> body { font-family: One; } </style> <script> var f1 = new FontFace("One", "url(../fonts/markA.ttf)"); var f2 = new FontFace("One", "url(../fonts/mark2A.ttf)"); f1.load(); f2.load(); Promise.all([f1.load(), f2.load()]) .then(function() { document.fonts.add(f1); document.fonts.add(f2); }) .then(document.fonts.ready) .then(function() { document.fonts.delete(f2); document.documentElement.className = ""; }); </script> <p>ABC</p>