Compress PDF, JPEG, PNG, TIFF Word documents, Excel spreadsheets and PowerPoint presentations with NXPowerLite Desktop. Files remain in their original format, with no discernible loss of quality. Files remain in their original format, with no discernible loss of quality – and there’s no need to unzip before using them. It’s incredibly easy to use. Simply select a file, choose your optimization level and click the ‘Optimize’ button. If you use Microsoft Outlook or Lotus Notes, it’s even easier. NXPowerLite Desktop will automatically optimize email attachments as they are sent.