Examine source code of Pixefy - Responsive Design Checker

{
  "manifest_version": 3,
  "name": "Pixefy - Responsive Design Checker",
  "version": "1.2.16",
  "description": "Preview and debug your website’s responsiveness across multiple devices in real-time, all inside one browser tab.",
  "browser_specific_settings": {
    "gecko": {
      "id": "pixefy@pixefy.io",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "16": "assets/pixefy16.png",
    "32": "assets/pixefy32.png",
    "48": "assets/pixefy48.png",
    "128": "assets/pixefy128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_title": "Pixefy"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "iframe.css",
        "auth-popup.html",
        "auth-popup.js",
        "gifs/*.gif",
        "assets/media/*.mp4",
        "images/activity-tab-content-dark.webp",
        "images/activity-tab-content-light.webp",
        "images/activity-tab-css-dark.webp",
        "images/activity-tab-css-light.webp"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "permissions": [
    "tabs",
    "scripting",
    "storage",
    "webNavigation",
    "webRequest",
    "declarativeNetRequest",
    "browsingData",
    "contextMenus"
  ],
  "host_permissions": [
    "<all_urls>",
    "http://localhost/*",
    "https://localhost/*",
    "http://127.0.0.1/*",
    "https://127.0.0.1/*"
  ]
}