uppy/website/src/examples/multipart/app.html

<!-- Basic Uppy styles -->
<link rel="stylesheet" href="/uppy/uppy.css">

<div class="clearfix"></div>

<form id="myform1">
  <input id="myfile1" type="file" name="myfile" multiple />
</form>

<form id="myform2">
  <input id="myfile2" type="file" name="myfile" multiple />
</form>

<div class="clearfix"></div>

<button id="myupload">
  Upload
</button>