Domoticz

I have made a button that links to a screen.
How to show a web page on that screen at full screen size

columns[1] = {}
columns[40]['blocks'] = [' web page ]
columns[40]['width'] = 12;

var screens = {}
screens[4] = {}
screens[4]['background'] = 'bg2.jpg';
screens[4]['columns'] = [40]

You can use a button to open a webpage in a new page by setting the newwindow parameter of the button to 1.
See https://dashticz.readthedocs.io/en/mast ... parameters

If you use are using Fully Kiosk Browser (on Android) then the new webpage will open in full screen mode as well.

In Chrome I don't think it's possible, because Chrome doesn't allow webpages to be shown in full screen mode automatically.

Maybe as an alternative you could show the webpage in a Dashticz frame. Define a one column screen in Dashticz with only this frame as block. Use the slide parameter of the button to slide to this screen on click. If needed you could tweak the styling for this screen only via custom.css.