Examine source code of Time Zone Converter

{
  "manifest_version": 2,
  "name": "Time Zone Converter",
  "version": "1.0",
  "description": "Convert time between different time zones instantly.",
  "icons": {
    "64": "icon64.png",
    "128": "icon128.png"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icon64.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ce5246ae-cb7a-4303-b12a-c0b52d425ba0}",
      "strict_min_version": "100.0"
    }
  }
}