In Parallels RAS 18.2 and newer, you can copy and paste plain text between a local device and remote session in both directions. Simply use Ctrl+C/Cmd+C to copy (Ctrl+X/Cmd+X to cut) and Ctr+V/Cmd+V to paste. This functionality is fully supported in Chromium based browsers (Chrome, Edge Chromium, Opera) and Internet Explorer. On Firefox, only server to client copy/paste is supported. Other web browsers do not support this functionality.