When I tried to generate a report and click on Printable version. It displays a separate page for me to print. However, there is a large padding on top of the page. Is there anywhere I could modify the code to make it smaller.
Yes you can decrease as per your need. Open interface/patient_file/report/custom_report.php and search for padding-top:95px . Adjust that 95 to your own value and see the results.