Examine source code of JSearch

{
  "manifest_version": 2,
  "name": "JSearch",
  "description": "The Official JSearch Extension from WebBase",
  "version": "1.0",
  "browser_action": {
    "default_popup": "popup.html"
  },
  "permissions": [
    "tabs"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{744f07e1-1952-40b4-86a2-4f471d6a8a78}"
    }
  }
}