Resize DPI screen dimension resolution to 1024x600 lightdm

Hi all
I would like resize DPI screen dimension of firefox page to 1024x600 for dashboard
I open the ui page using lightdm service

many thanks in advance

That is a browser question, not a node-red one. In any case why does it matter?

Thank you
I would like run the following command from func-exec in nodered /usr/bin/startx /root/

Where is

firefox - -kiosk

The function start but in wrong resolution on my dp port. I would it start always with 1024x600_60.00 resolution

It is possible?

I would go look at what the firefox command allows you to do.