Examine source code of New Tab Redirecter

{
  "name": "New Tab Redirecter",
  "version": "2.0.1",
  "description": "Replace your new tab with the web site you want.",
  "homepage_url": "https://github.com/EmirYLMZ128/SideBarPomodoro",
  "manifest_version": 2,
  "icons": {
    "48": "img/icon48.png",
    "96": "img/icon96.png"
  },
  "options_ui": {
    "page": "options/options.html"
  },
  "permissions": [
    "storage",
    "unlimitedStorage"
  ],
  "chrome_url_overrides": {
    "newtab": "Index.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{86a526f9-1758-49e5-ba82-9a3c68e6d21f}",
      "strict_min_version": "57.0a1"
    }
  }
}