Examine source code of Nepali Date Today!

{
  "manifest_version": 2,
  "name": "Nepali Date Today!",
  "version": "2.0.0",
  "description": "Today's Nepali date with all other details!",
  "icons": {
    "48": "icons/nepali-date-icon-48.png",
    "96": "icons/nepali-date-icon-96.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "permissions": [
    "tabs",
    "cookies",
    "<all_urls>"
  ],
  "browser_action": {
    "default_icon": "icons/nepali-date-icon.png",
    "default_title": "Nepali Date",
    "default_popup": "popup/popup.html"
  }
}