Examine source code of Tab Home

{
  "manifest_version": 3,
  "name": "Tab Home",
  "version": "1.0",
  "description": "Pins the current URL and allows navigating back to it via the extension icon.",
  "permissions": [
    "sessions",
    "menus",
    "contextMenus",
    "tabs",
    "scripting"
  ],
  "host_permissions": [
    "http://*/*",
    "https://*/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_title": "Pin this URL",
    "default_icon": {
      "16": "icons/pin.svg",
      "32": "icons/pin.svg"
    }
  },
  "icons": {
    "16": "icons/pin.svg",
    "32": "icons/pin.svg",
    "48": "icons/pin.svg",
    "128": "icons/pin.svg"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "tab-home@example.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}