Examine source code of Ser Bachiller

{
  "name": "Examen EAES",
  "version": "2.3",
  "description": "Extensión para el Examen de Acceso a la Educación Superior EAES",
  "permissions": [
    "tabs",
    "webRequest",
    "*://*.serbachiller.ec/*",
    "*://*.jovenesweb.com/*",
    "*://admision.senescyt.gob.ec/*",
    "*://serbachiller.evaluacion.gob.ec/simulador/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "Extensión para el examen EAES",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "images/16.png",
      "32": "images/32.png",
      "48": "images/48.png",
      "128": "images/128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.serbachiller.ec/*",
        "*://*.jovenesweb.com/*",
        "*://admision.senescyt.gob.ec/*",
        "*://examenadmision.senescyt.gob.ec/*",
        "*://serbachiller.evaluacion.gob.ec/simulador/*"
      ],
      "run_at": "document_end",
      "js": [
        "manager.js"
      ],
      "css": [
        "insert/styles.css"
      ]
    }
  ],
  "icons": {
    "16": "images/16.png",
    "32": "images/32.png",
    "48": "images/48.png",
    "128": "images/128.png"
  },
  "manifest_version": 2
}