Enable File Attachment List

There are two types of attachments that can be found within a PDF file:

• Embedded file attachments (not annotations)
• File attachment annotations

In the WebViewer UI the file attachment panel is disabled by default. You can enable it by using enableElements.

WebViewer({
  fullAPI: true,
  // other options
}, document.getElementById('viewer'))
.then(() => {
  // enable attachment panel
  instance.UI.enableElements(['attachmentPanelButton']);
});