Examine source code of City Scapes

{
  "manifest_version": 2,
  "name": "City Scapes",
  "version": "1.0.0",
  "description": "A beautiful new tab for your Edge browser with a City Scapes theme.",
  "browser_specific_settings": {
    "gecko": {
      "id": "support@candytechltd.com",
      "strict_min_version": "42.0"
    }
  },
  "icons": {
    "16": "assets/icons/16px.png",
    "96": "assets/icons/96px.png",
    "128": "assets/icons/128px.png"
  },
  "browser_action": {
    "default_icon": {
      "16": "assets/icons/16px.png"
    },
    "default_title": "City Scapes"
  },
  "author": "Candy Tech",
  "homepage_url": "https://www.cityscapestab.com/",
  "permissions": [
    "cookies",
    "storage",
    "*://*.cityscapestab.com/*"
  ],
  "chrome_url_overrides": {
    "newtab": "new-tab.html"
  },
  "web_accessible_resources": [
    "assets/icons/*.png"
  ],
  "background": {
    "page": "main.html",
    "persistent": false
  }
}