Examine source code of My Font Choice

{
  "manifest_version": 2,
  "name": "My Font Choice",
  "description": "Enforces your choice of fonts as set in browser settings for Serif / San-serif etc. Preserves Icon-glyph fonts if possible.",
  "version": "1.6",
  "content_scripts": [
    {
      "all_frames": true,
      "js": [
        "myFontChoice.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "run_at": "document_end"
    }
  ],
  "options_ui": {
    "page": "options.html"
  },
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "myFontChoice@brandrock.co.za"
    }
  },
  "icons": {
    "48": "images/48x48.png"
  }
}