Examine source code of Sewgadgets

{
  "browser_action": {
    "default_icon": "img/logo.png",
    "default_popup": "html/popup.html",
    "default_title": "Sewgadgets"
  },
  "description": "Sewgadgets.com is a review blog to help people in choosing best sewing machines from the market. So Keep visiting us to check the market trend.",
  "icons": {
    "16": "img/favicon.png",
    "128": "img/logo.png"
  },
  "manifest_version": 2,
  "name": "Sewgadgets",
  "version": "1.1"
}