Examine source code of Websites for Assessment

{
  "name": "WHAT - Websites for Health Assessment Tool",
  "short_name": "WHAT",
  "version": "0.0.3",
  "description": "This extension assesses trustfulness of medical sources based on users and medical experts votes.",
  "icons": {
    "64": "images/icon-def.png",
    "128": "images/icon-logo.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Start",
    "default_icon": {
      "32": "images/icon-def.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "activeTab",
    "tabs",
    "storage",
    "notifications"
  ],
  "web_accessible_resources": [
    "data/info.json"
  ],
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "id": "{1e66f901-b187-465a-9ea1-befd89e00b41}"
    }
  }
}