So needed for latest apps and so easy to implement FYI for windows users check the output .css files for the src url Correct valuesrc: url('fa-solid-900.woff2') format('woff2'), url('fa-solid-900.ttf') format('truetype'); Windows creates the new file with a / that when removed the icons will show Wrong value src: url('/fa-solid-900.woff2') format('woff2'), url('/fa-solid-900.ttf') format('truetype');