Examine source code of URL in a Box

{
  "manifest_version": 2,
  "name": "URL in a Box",
  "version": "1.1.2resigned1",
  "description": "Puts a URL in a browser action",
  "applications": {
    "gecko": {
      "id": "url-in-a-box@r01"
    }
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "storage"
  ],
  "browser_action": {
    "browser_style": false,
    "default_icon": "icons/icon.svg",
    "default_popup": "blank.html"
  },
  "sidebar_action": {
    "default_icon": "icons/icon.svg",
    "default_title": "URL in a Box",
    "default_panel": "blank.html"
  },
  "options_ui": {
    "browser_style": true,
    "page": "options.html"
  },
  "commands": {
    "_execute_sidebar_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+U"
      }
    }
  }
}