Examine source code of DropScan

{
  "manifest_version": 3,
  "name": "DropScan - VirusTotal File Scanner",
  "version": "1.0.0",
  "description": "Modern file scanner using VirusTotal API with sleek monochrome UI",
  "icons": {
    "16": "icon.png",
    "32": "icon.png",
    "48": "icon.png",
    "128": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "dropscan@virustotal.scanner"
    }
  },
  "permissions": [
    "storage",
    "contextMenus",
    "activeTab",
    "notifications",
    "alarms"
  ],
  "host_permissions": [
    "https://www.virustotal.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_popup": "popup.html",
    "default_title": "DropScan",
    "default_icon": {
      "16": "icon.png",
      "32": "icon.png",
      "48": "icon.png",
      "128": "icon.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "scanner.html",
        "settings.html",
        "history.html",
        "icons.css"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}