VS Code Custom Font without Font Install Admin Privileges

1. Open Help -> Toggle Developer Tools in the menu (Ctrl + Shift + I)

2. Paste JavaScript code below into the Console and execute.

   var styleNode = document.createElement('style'); 
   styleNode.type = "text/css"; 
   var styleText = document.createTextNode(`
       @font-face {
           font-family: "Fira Code";
           src: url("https://raw.githubusercontent.com/adamdehaven/FiraCode/master/distr/woff2/FiraCode-Regular.woff2") format("woff2"),
               url("https://raw.githubusercontent.com/adamdehaven/FiraCode/master/distr/woff/FiraCode-Regular.woff") format("woff"),
               url("https://raw.githubusercontent.com/adamdehaven/FiraCode/master/distr/ttf/FiraCode-Regular.ttf") format("truetype"),
               url("https://raw.githubusercontent.com/adamdehaven/FiraCode/master/distr/otf/FiraCode-Regular.otf") format("opentype");
           font-weight: normal;
           font-style: normal;
       }`); 
   styleNode.appendChild(styleText); 
   document.getElementsByTagName('head')[0].appendChild(styleNode);

3. Ensure 'Fira Code' is the first entry in VS Code Font Family settings: 'Fira Code', Consolas, 'Courier New', monospace

4. Enable Font Ligatures in settings: "editor.fontLigatures": true

5. Optional: In the "Sources" tab of the Developer Tools, create a new Snippet with the code above, right-click the created Snippet to execute. This can be preserved even after restarting the application.