Examine source code of Woningstats

{
  "manifest_version": 3,
  "name": "Woningstats",
  "description": "Krijg direct een waardeinschatting van woningen en bekijk statistieken over de woning.",
  "version": "1.0.2.8",
  "permissions": [
    "activeTab",
    "tabs",
    "scripting",
    "storage"
  ],
  "host_permissions": [
    "https://www.funda.nl/*"
  ],
  "background": {
    "page": "background.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.funda.nl/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/v_circle_green_white.png",
      "48": "icons/v_circle_green_white.png",
      "128": "icons/v_circle_green_white.png"
    }
  },
  "icons": {
    "16": "icons/v_circle_green_white.png",
    "48": "icons/v_circle_green_white.png",
    "128": "icons/v_circle_green_white.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "mijnextensie@example.com",
      "strict_min_version": "109.0"
    }
  }
}