Examine source code of Smart Password Generator

{
  "manifest_version": 2,
  "name": "Smart Password Generator",
  "version": "1.2",
  "description": "Generates secure passwords based on a master password and а website’s domain.",
  "permissions": [
    "storage",
    "tabs"
  ],
  "icons": {
    "16": "images/icon16.png",
    "36": "images/icon36.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "images/icon16.png",
      "36": "images/icon36.png",
      "48": "images/icon48.png",
      "128": "images/icon128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{76ac4831-1352-4754-899c-ac3c298ba724}"
    }
  }
}