Hello With below code you can change the apperance of the unimfileuploadbutton. BEFORE:   AFTER: procedure TMainmForm.UnimFormReady(Sender: TObject); begin with UnimFileUploadButton1, JSInterface do begin JSAssign('element.dom.querySelector(".x-label-el").style.display', ['none']); JSAssign('element.dom.querySelector(".x-input-el").style.display', ['none']); JSAssign('element.dom.querySelector(".x-input-wrap-el").style.border', ['none']); JS