Examine source code of Bhumi Tool Pro

{
  "manifest_version": 2,
  "name": "Bhumi Tool Pro",
  "version": "3.4",
  "description": "Easily print Bangalrbhumi Dag & Khatian Information with just one click. and more creazy features.",
  "permissions": [
    "tabs",
    "activeTab",
    "storage",
    "clipboardRead",
    "clipboardWrite",
    "notifications",
    "webNavigation",
    "https://banglarbhumi.gov.in/*",
    "https://www.banglarbhumi.gov.in/*",
    "https://c-10-sketch.github.io/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://banglarbhumi.gov.in/*",
        "https://banglarbhumi.gov.in/*",
        "https://www.banglarbhumi.gov.in/*",
        "http://tkserver.serv00.net/*"
      ],
      "js": [
        "content.js",
        "content_script.js"
      ],
      "run_at": "document_end",
      "all_frames": true
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Extension Control Panel",
    "default_icon": {
      "16": "images/icon.png",
      "48": "images/icon.png",
      "128": "images/icon.png"
    }
  },
  "icons": {
    "16": "images/icon.png",
    "48": "images/icon.png",
    "128": "images/icon.png"
  },
  "web_accessible_resources": [
    "images/header.png",
    "data/ui/index.html"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{81bd8409-eb2f-4245-a8e6-3b4870d71c45}"
    }
  }
}