Examine source code of Cypherdog Encryption

{
  "manifest_version": 2,
  "name": "Cypherdog Encryption",
  "description": "Encrypt any file, any text, and share via any medium, any time",
  "version": "1.1.2",
  "browser_specific_settings": {
    "gecko": {
      "id": "{e6983f4e-b0e8-4069-9926-6770d5ee9aa1}",
      "strict_min_version": "110.0"
    }
  },
  "browser_action": {
    "default_icon": {
      "16": "logo_16.png",
      "48": "logo_48.png"
    },
    "default_title": "Settings",
    "default_popup": "options.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*/*"
      ],
      "js": [
        "js/vendor.js",
        "js/content_script.js"
      ],
      "css": [
        "styles/multi-email-input.css"
      ]
    }
  ],
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "permissions": [
    "activeTab",
    "contextMenus",
    "scripting",
    "storage",
    "notifications",
    "<all_urls>"
  ],
  "icons": {
    "16": "logo_16.png",
    "48": "logo_48.png",
    "128": "logo.png"
  }
}