Examine source code of Currency Converter

{
  "version": "0.0.9",
  "manifest_version": 2,
  "name": "Currency Converter",
  "author": "TIKAM CHAND MEGHwANSHI",
  "description": "Currency Converter - Converts one currency into another with one simple click.",
  "homepage_url": "https://www.tcmhack.in",
  "icons": {
    "128": "icon128.png"
  },
  "browser_action": {
    "default_popup": "index.html"
  }
}