Examine source code of NexusScan - Advanced URL Security Scanner

{
  "manifest_version": 3,
  "name": "NexusScan - Advanced URL Security Scanner",
  "version": "1.0.0",
  "description": "NexusScan: Advanced URL security scanner with VirusTotal and urlscan.io integration. Scan Smarter. Stay Safer.",
  "browser_specific_settings": {
    "gecko": {
      "id": "nexusscan@security.scanner"
    }
  },
  "permissions": [
    "activeTab",
    "storage",
    "tabs",
    "bookmarks",
    "declarativeNetRequest",
    "contextMenus",
    "notifications"
  ],
  "host_permissions": [
    "https://www.virustotal.com/*",
    "https://urlscan.io/*",
    "*://*/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "action": {
    "default_popup": "popup.html",
    "default_title": "NexusScan - Scan Smarter. Stay Safer",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "options_page": "options.html",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "declarative_net_request": {
    "rule_resources": [
      {
        "id": "nexusscan_ruleset_1",
        "enabled": true,
        "path": "rules.json"
      }
    ]
  },
  "commands": {
    "scan-current-page": {
      "suggested_key": {
        "default": "Ctrl+Shift+S",
        "mac": "Command+Shift+S"
      },
      "description": "Quick scan current page with NexusScan"
    },
    "toggle-protection": {
      "suggested_key": {
        "default": "Ctrl+Shift+P",
        "mac": "Command+Shift+P"
      },
      "description": "Toggle NexusScan real-time protection"
    }
  },
  "web_accessible_resources": [
    {
      "resources": [
        "icons/*",
        "assets/*"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}