In pdf.py → /home/frappe/frappe-bench/apps/frappe/frappe/utils
‘page-height’ : ‘29.7cm’,
‘page-width’ : ‘21.0cm’,
and play with margins:
‘margin-bottom’: ‘0mm’,
‘margin-left’: ‘0mm’,
‘margin-right’: ‘0mm’,
‘margin-top’: ‘0mm’,
If the above won’t work, you can add:
‘zoom’: ‘1’, ← don’t use percentage, it’s a float so you can use 0.X 1.X etc.