Examine source code of Meta Tag Analyzer

{
  "manifest_version": 2,
  "name": "Meta Tag Analyzer",
  "version": "1.0",
  "description": "Analyze meta tags on the current webpage.",
  "permissions": [
    "activeTab"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icon.png"
  },
  "icons": {
    "48": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a78e4d36-1b3d-4d3a-8e56-3c1bf72b9b3b}"
    }
  }
}