Examine source code of New Tab Redux

{
  "name": "New Tab Redux",
  "short_name": "New Tab Redux",
  "description": "A custom New Tab page, providing a quick, customizable layout of links and menus, as well as simple bookmark and history components.",
  "version": "1.16.0",
  "author": "Kallb123",
  "homepage_url": "https://github.com/Kallb123/NewTabRedux",
  "incognito": "split",
  "browser_specific_settings": {
    "gecko": {
      "id": "{f4046894-a4f5-476b-a7c9-04ea79dc47a4}"
    }
  },
  "chrome_url_overrides": {
    "newtab": "res/html/newtabredux.html"
  },
  "omnibox": {
    "keyword": "hl"
  },
  "background": {
    "scripts": [
      "res/js/background.js"
    ]
  },
  "permissions": [
    "fontSettings",
    "storage"
  ],
  "optional_permissions": [
    "bookmarks",
    "history",
    "management"
  ],
  "optional_host_permissions": [
    "https://www.amazon.co.uk/",
    "https://www.amazon.com/",
    "https://cart.payments.ebay.co.uk/",
    "https://www.facebook.com/",
    "https://m.facebook.com/",
    "https://github.com/",
    "https://accounts.google.com/",
    "https://mail.google.com/",
    "https://www.linkedin.com/",
    "https://login.live.com/",
    "https://*.mail.live.com/",
    "https://www.reddit.com/",
    "https://steamcommunity.com/",
    "https://store.steampowered.com/",
    "https://ticktick.com/",
    "https://trello.com/",
    "https://twitter.com/",
    "https://api.openweathermap.org/",
    "https://www.whatismyproxy.com/",
    "*://*/*"
  ],
  "icons": {
    "16": "res/img/icon-16.png",
    "48": "res/img/logo-48.png",
    "128": "res/img/logo-128.png"
  },
  "manifest_version": 3
}