While using the Upload widget, it would be really helpful if there were built-in properties to set allowed file types (like .pdf, .jpg, .docx, etc.) and a maximum file size limit (in MB or KB).

Right now, we have to write custom logic or JavaScript to validate these things, which takes extra time and can be tricky for less experienced developers. If these options were available directly in the widget, it would save time and make file uploads more secure and user-friendly out of the box.