Examine source code of Matcha Brew Calculator

{
  "manifest_version": 2,
  "name": "Matcha Brew Calculator",
  "version": "1.0.1",
  "description": "A local calculator for matcha powder, water, milk, and whisking time by drink style.",
  "homepage_url": "https://matcha-ksa.com",
  "browser_action": {
    "default_title": "Matcha Brew Calculator",
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icons/matcha-brew-calculator-icon-48.png",
      "96": "icons/matcha-brew-calculator-icon-96.png"
    }
  },
  "icons": {
    "48": "icons/matcha-brew-calculator-icon-48.png",
    "96": "icons/matcha-brew-calculator-icon-96.png",
    "128": "icons/matcha-brew-calculator-icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "matcha-brew-calculator@matcha-ksa.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}