Print without about.blank

we really can not help with out a link to your page.

Thanks

Here’s a page;
https://kaikourarealty.co.nz/listings/kkr526-shearwater-drive-kaikoura/

Ah, you mean about.blank that appears in the Header / Footer?
This can be turn off in the print dialog.

It might be possible to overwrite the address bar settings by the browsers config:
https://developer.mozilla.org/en-US/docs/Web/API/window.open
https://stackoverflow.com/questions/6748246/how-to-disable-location-bar-and-scroll-bars-of-pop-window-in-chrome

However, modern browsers do not allow for this to be hidden programmatically for security reasons. This about:blank address bar will not print, it is simply visible on the print window.