Examine source code of Qwiki

{
  "manifest_version": 3,
  "name": "Qwiki",
  "version": "2.0.0",
  "description": "A beautiful Wikipedia new tab page",
  "chrome_url_overrides": {
    "newtab": "newtab.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{36ddb27e-b7f0-4fca-b05a-ab8f9fe1460e}"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  }
}