CONSOLE WARNING: document.fonts.ready() method is going to be replaced with document.fonts.ready attribute in future releases. Please be prepared. For more help, check https://code.google.com/p/chromium/issues/detail?id=392077#c3 . Test for FontFaceSet.status attribute On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". PASS document.fonts.check('10px TestFont') is false PASS document.fonts.status is "loaded" PASS document.fonts.status is "loading" PASS document.fonts.check('10px TestFont') is true PASS document.fonts.status is "loaded" PASS successfullyParsed is true TEST COMPLETE