<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<h1>Rotate</h1>
<form action="/rotate-pdf" method="post" enctype="multipart/form-data">
<input type="file" name="pdfFile" accept=".pdf" multiple>
<br>
<button id="doneButton">Done</button>
</form>
</body>
</html>