Examine source code of MyPodcast

{
  "manifest_version": 2,
  "name": "MyPodcast",
  "version": "1.0.2",
  "description": "Turn your saved articles and YouTube videos into a personal podcast.",
  "permissions": [
    "storage",
    "scripting",
    "activeTab",
    "tabs",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "MyPodcast",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "mypodcast@eddmann.com"
    }
  }
}