What to do with UUID of group of files?

In many cases, you don’t even need individual files UUIDs. You can address each file in a group by indexing the group:


If you need to get individual file UUIDs, it is better to subscribe to the onChange event using JavaScript API:

widget.onChange(group => {
  const files = group.files() // array of file instances
  Promise.all(files).then(infos => {
    console.log(infos) // array of fileInfo objects