Examine source code of PageIT

{
  "description": "Shows HTML as turnable Page.",
  "manifest_version": 2,
  "name": "PageIT",
  "version": "1.0.2",
  "homepage_url": "https://pageit.at",
  "permissions": [
    "activeTab"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content_scripts/load-script.js"
      ],
      "all_frames": false
    }
  ],
  "background": {
    "scripts": [
      "background_scripts/background.js"
    ]
  },
  "browser_action": {
    "default_title": "PageIT",
    "default_icon": {
      "16": "icons/b1.png",
      "32": "icons/b1.png"
    }
  }
}