Default Theme

The uploader's built-in appearance with no custom styling. Clean, professional, and ready to use.

What you should see: exactly what you get with no theming at all — multiple selection, a progress bar and a drop zone. This is the baseline the other appearance demos start from.

Drag & drop files here, or paste from clipboard

<core-upload asp-upload-url="/api/upload/upload"
 asp-multiple="true"
 asp-progress="true"
 asp-drop-zone="true">
</core-upload>

What ships without styling

The default look is deliberately plain: neutral colours, restrained spacing, nothing that assumes a particular design system. It is meant to sit quietly inside an application that has its own visual language.

Theming is CSS, not options

Every element carries a stable class name, so restyling is a stylesheet and can express anything CSS can. Two states are worth preserving through any restyle: the drag-over highlight, and the visual difference between a completed file and a failed one.