Examine source code of inTab Pro

{
  "applications": {
    "gecko": {
      "id": "{0e438b63-ee08-42b1-9f4b-5d7a347b0692}",
      "strict_min_version": "55.0"
    }
  },
  "background": {
    "scripts": [
      "./js/background.js"
    ],
    "persistent": true
  },
  "default_locale": "en",
  "browser_action": {
    "default_icon": {
      "64": "./icons/64.png",
      "128": "./icons/128.png"
    },
    "default_title": "inTab Pro",
    "default_popup": "./popup.html"
  },
  "icons": {
    "64": "./icons/64.png",
    "128": "./icons/128.png"
  },
  "manifest_version": 2,
  "name": "inTab Pro",
  "short_name": "inTab Pro",
  "description": "inTab Pro is a simple and easy-to-use new tab page plug-in, which not only provides a wealth of functions",
  "permissions": [
    "activeTab",
    "tabs",
    "storage",
    "bookmarks",
    "downloads",
    "notifications",
    "contextMenus",
    "unlimitedStorage",
    "history",
    "alarms",
    "topSites",
    "management",
    "background",
    "browsingData",
    "idle",
    "sessions",
    "webRequest",
    "webRequestBlocking",
    "http://*/",
    "https://*/",
    "chrome://favicon/"
  ],
  "version": "0.9.6",
  "chrome_url_overrides": {
    "newtab": "./override.html"
  },
  "externally_connectable": {
    "matches": [
      "https://*.zierwa.com/*"
    ]
  },
  "minimum_chrome_version": "72",
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'"
}