Examine source code of MemoTab – Productivity New Tab

{
  "manifest_version": 2,
  "name": "MemoTab – New Tab Notes & Focus Mode",
  "description": "Turn your new tab into a distraction-free sticky note board with Focus Mode and productivity insights.",
  "version": "2.16.0",
  "icons": {
    "16": "icon-16.png",
    "32": "icon-32.png",
    "48": "icon-48.png",
    "128": "icon-128.png"
  },
  "permissions": [
    "storage",
    "unlimitedStorage",
    "sidePanel",
    "offscreen",
    "alarms",
    "https://memotab.space/*"
  ],
  "optional_permissions": [
    "tabs",
    "downloads",
    "webNavigation",
    "notifications"
  ],
  "default_locale": "en",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "chrome_url_overrides": {
    "newtab": "newtab.html"
  },
  "browser_action": {
    "default_title": "Default Popup Title",
    "default_popup": "popup.html"
  },
  "sidebar_action": {
    "default_panel": "sidepanel.html",
    "default_title": "Default Popup Title"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8fde0b90-d997-4c39-9656-2b9e0d13ff70}"
    }
  }
}