Examine source code of Select and Search AZ

{
  "manifest_version": 2,
  "name": "Select and Search",
  "description": "Search for selected text on any search engine.",
  "version": "1.5",
  "default_locale": "en",
  "author": "痛ったい",
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "options_page": "options.html",
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "96": "icons/icon96.png"
  },
  "permissions": [
    "storage",
    "contextMenus",
    "tabs"
  ],
  "web_accessible_resources": [
    "options.html"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{13af4641-2c51-469f-861d-67b29803f226}"
    }
  }
}