Class QUrl

toString

• toString(): string

• Get a string representation of the URL.

  Note that this representation will generally start with "file://". In case you need a local file path, you can use the following code:

  var path = url.toString().replace(/^file:\/{3}/, (tiled.platform == 'windows') ? '' : '/');;
  

  Or have a look at whether an alternative property is available that gives you a local file path in the first place.