Examine source code of Eshteb

{
  "manifest_version": 2,
  "name": "Eshteb",
  "description": "We Iranian people use two languages: English and Persian. Sometimes we write something in Persian with English keyboard, and this is awful! This extension can reduce anger and solve the problem a little by pressing Ctrl+Shift+F!",
  "version": "1.0.1",
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "main.js"
      ]
    }
  ],
  "icons": {
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "commands": {
    "Fix": {
      "suggested_key": {
        "default": "Ctrl+Shift+F"
      },
      "description": "مشکل را حل می‌کند"
    }
  }
}