Examine source code of Hyperlink Extractor

{
  "manifest_version": 3,
  "name": "Hyperlink Extractor",
  "description": "Extract and filter all hyperlinks on the current page.",
  "version": "1.1",
  "action": {
    "default_title": "Extract Links"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "scripting",
    "activeTab"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "icons": {
    "16": "icons/icon-16.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "hyperlink-extractor@example.com"
    }
  }
}