Examine source code of WhatsApp Blur Chat

{
  "manifest_version": 2,
  "name": "WhatsApp Blur",
  "version": "1.5",
  "description": "Mem-blur semua chat di WhatsApp Web (teks, gambar, suara, file) dengan toggle.",
  "author": "Jodi Chandra",
  "homepage_url": "https://saweria.co/jodichandra",
  "icons": {
    "48": "icon48.png",
    "96": "icon96.png"
  },
  "permissions": [
    "activeTab",
    "tabs",
    "storage"
  ],
  "browser_action": {
    "default_title": "WhatsApp Blur",
    "default_icon": "icon.png",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://web.whatsapp.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "whatsapp_blur@example.com",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "websiteContent"
        ],
        "optional": [
          "technicalAndInteraction"
        ]
      }
    }
  }
}