Examine source code of An Nam Archive

{
  "manifest_version": 2,
  "name": "An Nam Archive",
  "version": "1.0",
  "description": "Immerse yourself in historical Vietnamese vocabulary, archaic terms, and Sino-Vietnamese roots through an elegant minimalist flashcard deck.",
  "icons": {
    "48": "annam_archive_icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "An Nam Archive"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{aa341363-bcfd-4011-8c30-357b9bd7f645}",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}