Examine source code of ArchiveFind

{
  "manifest_version": 3,
  "name": "ArchiveFind",
  "description": "Finds an archived version of a site.",
  "version": "1.1",
  "action": {
    "default_title": "Finds an archived version of a site.",
    "default_icon": "archive.png"
  },
  "permissions": [
    "activeTab",
    "scripting",
    "tabs"
  ],
  "background": {
    "scripts": [
      "service_worker.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "archivefind@archivefind.com",
      "strict_min_version": "42.0"
    }
  },
  "icons": {
    "48": "archive.png",
    "96": "archive.png",
    "144": "archive.png",
    "192": "archive.png"
  }
}