<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<link rel="manifest" href="charts.json">
<link rel="icon" href="basic-48.png">
</head>
<body>
<h1>Charts web app</h1>
<script>
window.onload = () => {
navigator.serviceWorker.register('/web_share_target/service_worker.js');
};
</script>
</body>
</html>