Examine source code of Fair Extractor

{
  "manifest_version": 2,
  "name": "Market Data Extractor",
  "version": "1.0",
  "description": "Automatically extracts market data and sends it to localhost server",
  "permissions": [
    "activeTab",
    "<all_urls>",
    "http://localhost:8000/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icon48.png",
      "96": "icon96.png"
    },
    "default_title": "Market Data Extractor"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "icons": {
    "48": "icon48.png",
    "96": "icon96.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "market-extractor@example.com",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}