Examine source code of Tiny Desk

{
  "manifest_version": 2,
  "name": "Tiny Desk",
  "description": "Chrome extension for the bookmark manager Tiny Desk",
  "version": "0.0.0.4",
  "icons": {
    "128": "icon_128.png"
  },
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "popup.html"
  },
  "permissions": [
    "tabs",
    "cookies",
    "*://*.tinydesk.me/"
  ],
  "chrome_url_overrides": {
    "newtab": "redirect.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  }
}