Examine source code of AccessURL

{
  "version": "1.2.6resigned1",
  "name": "AccessURL",
  "manifest_version": 2,
  "description": "Share access to websites without giving away your username and password. Share access with an Access URL instead.",
  "browser_action": {
    "default_title": "AccessURL",
    "default_popup": "popup.html",
    "default_icon": {
      "19": "img/icon-48.png",
      "38": "img/icon-96.png"
    }
  },
  "content_scripts": [
    {
      "run_at": "document_start",
      "matches": [
        "https://accessurl.com/*",
        "https://accessurl.com/*/*"
      ],
      "js": [
        "js/content_script.bundle.js"
      ]
    }
  ],
  "icons": {
    "16": "img/icon-16.png",
    "48": "img/icon-48.png",
    "96": "img/icon-96.png",
    "128": "img/icon-128.png"
  },
  "background": {
    "page": "background.html"
  },
  "permissions": [
    "tabs",
    "storage",
    "<all_urls>",
    "cookies",
    "clipboardWrite",
    "contextMenus"
  ],
  "content_security_policy": "font-src 'self' data:;",
  "browser_specific_settings": {
    "gecko": {
      "id": "{e3d62f7d-1cca-46b2-93a4-b8e086e9afec}"
    }
  }
}