Examine source code of Torrent links extractor

{
  "manifest_version": 2,
  "name": "torrent-links-extractor",
  "version": "1.0",
  "description": "Extracts torrent and magnet links from the current page",
  "permissions": [
    "activeTab",
    "tabs",
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "icons": {
    "48": "icons/border-48.png",
    "96": "icons/border-96.png"
  },
  "browser_action": {
    "default_icon": "icons/border-48.png",
    "default_popup": "popup.html",
    "default_title": "Hello World"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{210f93b2-4599-4b16-9445-272d55335fa5}"
    }
  }
}