Examine source code of Link Extract

{
  "manifest_version": 2,
  "name": "Link and Path Extractor",
  "version": "1.0",
  "description": "Find and save all links and paths from a webpage.",
  "permissions": [
    "activeTab",
    "downloads",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/virus-16.png",
      "48": "icons/virus-48.png",
      "128": "icons/virus-128.png"
    }
  },
  "icons": {
    "16": "icons/virus-16.png",
    "48": "icons/virus-48.png",
    "128": "icons/virus-128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{964423ed-d386-463d-9ad2-0f8b20334c41}"
    }
  }
}