Works with any backend npm install Zero dependencies

Custom Button Style

A gradient button with an upload icon, fully custom styled. Shows how far you can push the button design.

Drag & drop files here
<style>
 .mu-select-btn {
 background: linear-gradient(135deg, #f59e0b, #ef4444, #ec4899);
 border-radius: 50px;
 padding: 14px 28px;
 font-weight: 700;
 box-shadow: 0 4px 15px rgba(239,68,68,0.4);
 }
</style>
<button type="button" class="mu-select-btn">
 <svg ...>...</svg> Upload Your Files
</button>
var uploader = new MultipleUpload(document.getElementById('myUploader'), {
 uploadUrl: '/api/upload'
});

Restyling the trigger

The button is markup with a class name, so it takes your CSS directly — or can be replaced entirely with your framework's own button component while the hidden file input stays where it is.

Do not lose the states

Hover, focus and disabled all carry information, and focus is the one that gets dropped most often when a button is restyled. Without a visible focus ring the control becomes unusable for keyboard navigation, which is a much bigger regression than it looks in a design review.