Dear Friends,
Here is a step by step way to use them.
1. Download the official kit from : https://fontawesome.com/download by choosing FreeForWeb
2. Copy this folder (uncompressed) into your files Folder
3. In your Unigui Project add this simple line on your ServerModule > CustomFiles : (Thx to GerhardV)
<link rel="stylesheet" href="files/fontawesome-free-5.12.0-web/css/all.css">
(5.12 is the current release)
4. Put an UniLabel