Examine source code of ExpressVPN: VPN proxy for a better internet

{
  "name": "__MSG_app_name_title__",
  "short_name": "__MSG_app_short_name_title__",
  "description": "__MSG_app_description_text__",
  "manifest_version": 3,
  "version": "8.0.10.1876",
  "icons": {
    "16": "images/toolbar-icons/toolbar-icon-16.png",
    "32": "images/toolbar-icons/toolbar-icon-32.png",
    "48": "images/toolbar-icons/toolbar-icon-48.png",
    "128": "images/toolbar-icons/toolbar-icon-128.png"
  },
  "default_locale": "en",
  "action": {
    "default_popup": "src/popup.html",
    "default_title": "ExpressVPN"
  },
  "background": {
    "scripts": [
      "src/scripts/background.js"
    ]
  },
  "host_permissions": [
    "<all_urls>"
  ],
  "permissions": [
    "storage",
    "tabs",
    "proxy",
    "cookies",
    "privacy",
    "webRequest",
    "unlimitedStorage",
    "declarativeNetRequest",
    "webRequestBlocking",
    "nativeMessaging",
    "notifications"
  ],
  "web_accessible_resources": [
    {
      "matches": [
        "<all_urls>"
      ],
      "resources": [
        "images/*",
        "fonts/*",
        "src/html/diagnosticsConsent.html",
        "src/html/networkLock.html",
        "src/html/appNotInstalled.html",
        "src/html/auth-callback.html"
      ]
    }
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self';"
  },
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "115.0",
      "id": "firefox-addon@expressvpn.com"
    }
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+X",
        "mac": "Command+Shift+O"
      }
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "all_frames": true,
      "match_about_blank": true,
      "run_at": "document_start",
      "js": [
        "src/scripts/content/location-spoofing-bootstrap.js"
      ]
    }
  ],
  "homepage_url": "https://www.expressvpn.com",
  "author": "ExpressVPN"
}