Examine source code of DataReceipt

{
  "description": "See what your browsing data is worth. Detects trackers in real time and shows how much corporations earn from your data.",
  "version": "1.0.3",
  "name": "DataReceipt",
  "manifest_version": 3,
  "action": {
    "default_icon": "icon-34.png",
    "default_title": "DataReceipt — click to toggle"
  },
  "background": {
    "scripts": [
      "background.bundle.js"
    ]
  },
  "permissions": [
    "webRequest",
    "tabs",
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "datareceipt@datareceipt.org",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self';"
  },
  "host_permissions": [
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.bundle.js"
      ],
      "css": []
    }
  ],
  "icons": {
    "128": "icon-128.png"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "*.woff2",
        "*.woff"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}