Examine source code of Quick Text Translator

{
  "manifest_version": 2,
  "name": "Quick Text Translator",
  "version": "1.0",
  "description": "Translate selected text using MyMemory API, supports Russian and English language.",
  "permissions": [
    "activeTab",
    "tabs",
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{b2881b8e-bc3a-474d-aa37-6c861485a393}",
      "strict_min_version": "115.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "64": "icon64.png",
    "128": "icon128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "64": "icon64.png"
    }
  }
}