Examine source code of Unit Converter1q

{
  "manifest_version": 2,
  "name": "Unit Converter Pro",
  "version": "1.0",
  "description": "Fast offline converter for length, mass, temperature, area, volume, speed, and time.",
  "permissions": [
    "storage"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "128": "icon128.png"
    }
  },
  "icons": {
    "128": "icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{486dc9f8-ed0e-4779-a748-84163ac63261}"
    }
  }
}