Examine source code of naagu

{
  "manifest_version": 2,
  "name": "naagu",
  "version": "1.5",
  "browser_specific_settings": {
    "gecko": {
      "id": "webchief@amami.ai"
    }
  },
  "description": "Extracts article text and sends it to the backend for audio conversion.",
  "permissions": [
    "contextMenus",
    "activeTab",
    "storage",
    "http://*/",
    "https://*/",
    "notifications",
    "tabs",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.bundle.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "Readability.js",
        "content_script.bundle.js"
      ],
      "run_at": "document_start"
    }
  ],
  "browser_action": {
    "default_icon": {
      "16": "icons/favicon-16x16.png",
      "32": "icons/favicon-32x32.png",
      "192": "icons/android-chrome-192x192.png",
      "512": "icons/android-chrome-512x512.png"
    },
    "default_title": "Convert Article to Audio",
    "default_popup": "popup.html"
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "web_accessible_resources": [
    "status.html",
    "player.html",
    "playlist.html",
    "status.bundle.js",
    "player.bundle.js",
    "playlist.bundle.js"
  ]
}