How To: Use Fluent UI Icons in Gatsby

Prerequisites

• A running Gatsby development environment with Fluent UI

First - Initialize icons

Fluent UI React's official documentation instructs you to include the below lines in the root entry file.

import { initializeIcons } from '@uifabric/icons';
initializeIcons();

In Gatsby, an easier and more straightforward way is to include these lines in index.js or a layout component (I.E. Layout.js).

Another possible solution may be to put them in one of Gatsby's API files.

By default, when a user visits the deployed Gatsby app, all icons will be downloaded from one of Microsoft servers.

To avoid this behaviour, do a couple of small adjustments.

1. Copy the icons from your_project\node_modules\@uifabric\icons\fonts to a subdirectory in your projects 'static' folder.
2. Modify the lines from earlier slightly, as below, where the parameter for initializeIcons() is the path to where the icons are.

import { initializeIcons } from '@uifabric/icons';
initializeIcons('https://lybekk.tech/fluenticons/');

The slash '/' at the end is important

Now Gatsby will load the icons with the same performance and guarantees as the other files, ensuring correct rendering.

See an example of Fluent UI running on Gatsby here:
Lybekk Tech - UUID Generator

Further documentation on using
icons with Microsoft's Fluent UI

As an added bonus, a way to use Font Awesome instead of Fluent UI icons.

import { registerIcons } from '@uifabric/styling';
import { FontAwesomeIcon } from '@fortawesome/react-fontawesome';
import { faCode } from '@fortawesome/free-solid-svg-icons';

registerIcons({
  icons: {
    Filter: <FontAwesomeIcon icon={faCode} />
  }
});