vncviewer - TigerVNC
https://tigervnc.org/doc/vncviewer.htmlcommand-line option to vncviewer. Parameters can be turned on with -paramor off with -param=0. Parameters which take a value can be specified as -param value. Other valid forms are param=value-param=value--param=value. Parameter names are case-insensitive. Many of the parameters can also be set graphically via the options
VNC Viewer - RealVNC®
nettest.realvnc.com › products › vncVNC Viewer allows any option to be specified on the command-line when it is launched. Options specified on the command-line override those specified in the Default Options dialog. However, options configured on the command-line can be changed once a connection has been made using the Connection Options dialog.
VNC Viewer for Windows - RealVNC®
nettest.realvnc.com › open › 4VNC Viewer allows any option to be specified on the command-line when it is launched. Options specified on the command-line override those specified in the Default Options dialog. However, options configured on the command-line can be changed once a connection has been made using the Connection Options dialog.