Examine source code of CoWIN Translator

{
  "name": "Cowin Translator",
  "short_name": "Cowin Translation",
  "manifest_version": 2,
  "version": "0.3.1",
  "description": "Replace Text in cowin page",
  "author": "FSMI",
  "content_scripts": [
    {
      "matches": [
        "https://www.cowin.gov.in/*"
      ],
      "css": [
        "style.css"
      ],
      "js": [
        "content_script.js"
      ],
      "all_frames": true,
      "run_at": "document_end"
    }
  ],
  "browser_action": {
    "default_icon": "icon/icon.jpg",
    "default_popup": "popup/extension.html",
    "theme_icons": [
      {
        "light": "icon/icon-32x32.jpg",
        "dark": "icon/icon-32x32.jpg",
        "size": 32
      },
      {
        "light": "icon/icon-64x64.jpg",
        "dark": "icon/icon-64x64.jpg",
        "size": 64
      }
    ],
    "default_title": "CoWin Translator"
  },
  "permissions": [
    "activeTab"
  ],
  "web_accessible_resources": [
    "data/json/*.json"
  ]
}