I added style line-height:50% and use <small> tag for for entire document… It seems to be working for me to get 1/2 A4 print-out. But I don’t know whether this is the proper way to adjust print-size in ERPNext.
I am trying to similar thing, to create custom page size for Delivery Note, 8.5in x 5.5in printed on a dot-matrix printer. I got similar results
In my print format I can have 5 items, if there are more items I want it to come on the next page leaving space for the letter head which comes built on the paper. Is it possible to do that?