Examine source code of Unit Converter

{
  "description": "Easy Unit Converter, Temperature Converter, Weight Converter, Time Converter, Length Converter, Area Converter, Volume Converter. See more at https://easyunitconverter.com",
  "manifest_version": 2,
  "name": "Easy Unit Converter",
  "version": "1.3",
  "homepage_url": "https://easyunitconverter.com",
  "icons": {
    "28": "icons/32x32.png",
    "48": "icons/48x48.png",
    "128": "icons/128x128.png"
  },
  "permissions": [
    "activeTab"
  ],
  "browser_action": {
    "default_icon": "icons/32x32.png",
    "theme_icons": [
      {
        "light": "icons/32x32.png",
        "dark": "icons/32x32.png",
        "size": 32
      }
    ],
    "default_title": "Easy Unit Converter ! For All Type of Online Calulator & Metric Conversions",
    "default_popup": "popup/home.html"
  }
}