How to change viewport size at the runtime ?

[shadr]

Hi, I want to take a full page screenshots at different viewport sizes (desktop, tablet, mobile size etc). I can set the window size when creating browser context via screen, window or config arguments of AsyncCamoufox. I want to avoid creating multiple browser windows with different sizes, because that would involve requesting page multiple times and would require more system resources. How can I change window size at the runtime ?