how to scale (large) font-awesome icons from the react-icons package

if you want a 5x icon size you need to pass it to the react class as size

// Font awesome pixel sizes relative to the multiplier. 
// 1x - 14px
// 2x - 28px
// 3x - 42px
// 4x - 56px
// 5x - 70px

<FaFolderOpen size={70} />

if you notice it jumps by 14 each time

from the github readme it shows everything is overridden inline. its rendering a svg so you cant use 5x you have to use a pixel size

Edit

Coming back to this a few years later, with newer versions of FontAwesome/ReactIcons the recommended way to handle different sizings is with their icon provider that utilizes the React Context API. This requires React v16.3+

import { IconContext } from "react-icons";

<IconContext.Provider value={{ className: "shared-class", size: 70 }}>
  <>
    <FaFolder />
    <FaBeer />
  </>
</IconContext.Provider>