Examine source code of Epic Games Library Viewer

{
  "manifest_version": 3,
  "name": "Epic Games Library Viewer",
  "version": "1.2",
  "description": "View a list of your purchased Epic Games games with search option.",
  "author": "Michał Marczuk",
  "browser_specific_settings": {
    "gecko": {
      "id": "epic-games-library@example.com"
    }
  },
  "permissions": [
    "tabs",
    "storage",
    "activeTab"
  ],
  "host_permissions": [
    "https://www.epicgames.com/*",
    "https://store.epicgames.com/*"
  ],
  "action": {
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.epicgames.com/*",
        "https://store.epicgames.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "library.html"
      ],
      "matches": [
        "https://*.epicgames.com/*"
      ]
    }
  ],
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  }
}