Examine source code of Random Password Generator

{
  "manifest_version": 2,
  "name": "Random Password Generator",
  "version": "1.0.0",
  "description": "Generates random passwords.",
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "browser_action": {
    "default_icon": {
      "16": "icon16.png",
      "32": "icon32.png",
      "48": "icon48.png",
      "128": "icon128.png"
    },
    "default_title": "Random Password Generator",
    "default_popup": "index.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f71e70f8-9fac-4ada-b1f3-a77ed2ba8b0f}"
    }
  }
}