Examine source code of Arabic Fonts for Twitter

{
  "manifest_version": 3,
  "name": "Arabic Fonts for Twitter",
  "description": "Bigger Arabic for Twitter",
  "version": "1.0",
  "icons": {
    "48": "extension-icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.x.com/*"
      ],
      "js": [
        "font-insert.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background-script.js"
    ],
    "type": "module"
  },
  "action": {
    "default_icon": "extension-icon.png",
    "default_title": "Arabic Fonts for Twitter",
    "default_popup": "popup.html"
  },
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "haiderextensions97@gmail.com",
      "strict_min_version": "109.0"
    }
  }
}