Examine source code of Redirector URL

{
  "manifest_version": 3,
  "name": "Redirector",
  "description": "Dynamic URL Redirector",
  "version": "0.16.11",
  "icons": {
    "16": "icon/16.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "96": "icon/96.png",
    "128": "icon/128.png"
  },
  "permissions": [
    "storage",
    "webRequest",
    "webNavigation"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "action": {
    "default_icon": {
      "16": "icon/16.png",
      "32": "icon/32.png",
      "48": "icon/48.png",
      "96": "icon/96.png",
      "128": "icon/128.png"
    }
  },
  "commands": {
    "navigate-to-original": {
      "suggested_key": {
        "default": "Alt+Shift+O"
      },
      "description": "Navigate to original page (before redirect)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "redirector@rxliuli.com"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "open_in_tab": true,
    "page": "options.html"
  }
}