Examine source code of BeanShot

{
  "name": "BeanShot",
  "description": "Taking Beautiful Screenshots Has Never Bean That Easy!",
  "version": "1.1.2",
  "manifest_version": 2,
  "icons": {
    "16": "/icons/app_icon_16.png",
    "32": "/icons/app_icon_32.png",
    "48": "/icons/app_icon_48.png",
    "128": "/icons/app_icon_128.png"
  },
  "browser_action": {
    "default_popup": "popup.html"
  },
  "permissions": [
    "tabs",
    "activeTab",
    "storage",
    "downloads",
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "app@beanshot.com"
    }
  }
}