Examine source code of Rabatio

{
  "manifest_version": 2,
  "name": "Rabatio",
  "description": "Oszczędzaj automatycznie podczas zakupów online! Wtyczka Rabatio sama wyszukuje i stosuje najlepsze kody rabatowe w Twoim koszyku. Nie szukaj zniżek – po prostu płać mniej.",
  "version": "2.0.6",
  "short_name": "Rabatio",
  "icons": {
    "16": "icon/16.png",
    "24": "icon/24.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "96": "icon/96.png",
    "128": "icon/128.png"
  },
  "permissions": [
    "storage",
    "tabs",
    "activeTab",
    "scripting",
    "webNavigation"
  ],
  "default_locale": "pl",
  "browser_specific_settings": {
    "gecko": {
      "id": "rabatio@rabatio.pl",
      "data_collection_permissions": {
        "optional": [
          "technicalAndInteraction"
        ],
        "required": [
          "none"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content-scripts/content.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "content-scripts/content.css"
  ],
  "browser_action": {}
}