Click the Installation Package link for your operating system.To start the download, fill out the form (name, country, version, and mailing list preferences), then click Free Download.If you’re using a Mac, you’ll need to install Legacy Java Runtime 6 before you can install the Crystal Reports viewer.Go to in a web browser. This is the download site for SAP Crystal Reports Viewer, a free applications for Windows and macOS that can open.Steps on How to Open an Rpt File on PC or Mac Note: RPTR files are similar to regular Crystal Reports files except that they’re read-only files, meaning that they’re meant to be opened and viewed but not edited.