Examine source code of DailyMail Extras

{
  "name": "DailyMail Extras",
  "author": "Global Savings Group",
  "version": "1.1.32",
  "manifest_version": 2,
  "description": "DailyMail Extras automatically finds and applies every voucher code in one click.",
  "icons": {
    "128": "static/128x128-active.png"
  },
  "browser_action": {
    "default_icon": "static/128x128-inactive.png"
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "dist/content.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "dist/background.js"
    ]
  },
  "permissions": [
    "activeTab",
    "cookies",
    "storage",
    "tabs",
    "unlimitedStorage",
    "webRequest",
    "http://*/*",
    "https://*/*"
  ],
  "web_accessible_resources": [
    "static/*"
  ],
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "browser_specific_settings": {
    "gecko": {
      "id": "{e8e61e79-334f-42a9-ba10-ab79ff8fcb53}"
    }
  },
  "options_ui": {
    "page": "static/options/index.html"
  }
}