Examine source code of FNTab

{
  "version": "4.1.2",
  "default_locale": "en",
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDesc__",
  "chrome_url_overrides": {
    "newtab": "assets/html/newtab.html"
  },
  "chrome_settings_overrides": {
    "homepage": "assets/html/newtab.html"
  },
  "content_security_policy": "default-src 'none'; img-src 'self'; script-src 'self'",
  "permissions": [
    "bookmarks",
    "webRequest",
    "webRequestBlocking",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "assets/js/redirector.js"
    ],
    "persistent": true
  },
  "icons": {
    "16": "assets/img/icon_16.png",
    "32": "assets/img/icon_32.png",
    "64": "assets/img/icon_64.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "107.0",
      "id": "{0ccfe871-476f-4627-ad67-52d2dc19ea8d}"
    }
  },
  "author": "Alexandra",
  "incognito": "spanning",
  "homepage_url": "https://git.asprivacy.com/alexandra/alexandra_firefox",
  "manifest_version": 2
}