Examine source code of Select and Copy, Search

{
  "manifest_version": 3,
  "name": "Select and Copy",
  "version": "4.0",
  "description": "Allows you to easily copy, without using CTR + C or CMD + C.",
  "icons": {
    "48": "icons/icon.svg"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "/select-copy.js"
      ]
    }
  ],
  "browser_action": {
    "browser_style": true,
    "default_title": "Select and Copy",
    "default_popup": "/main.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "rayeole@gmail.com"
    }
  },
  "author": "Rohan Yeole, djangoproject.in"
}