Examine source code of Cnrtl

{
  "manifest_version": 2,
  "name": "Cnrtl",
  "version": "1.2",
  "description": "Get definition, synonyms, etymology of selected words with CNRTL website",
  "icons": {
    "48": "icons/icon.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "page": "options.html",
    "browser_style": true
  },
  "permissions": [
    "activeTab",
    "contextMenus",
    "storage",
    "tabs"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{47a596ef-1900-4ddc-aff5-09a718f4d666}"
    }
  }
}