Examine source code of Exam Result PDF

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Exam_Result_PDF_Extension",
  "icons": {
    "64": "icons/Exam_Result_PDF_icon64.png"
  },
  "browser_action": {
    "default_icon": {
      "64": "icons/Exam_Result_PDF_icon64.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "main.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "tabs"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{b75ed994-3739-4198-ad56-60e23f9bbc53}"
    }
  }
}