You can customize the Order PDF footer which is great for adding things that are important for your customers to see.
If you want to add your Registered Company Number, VAT or Tax ID, Company Directors or bank details then the Print Order Footer will be a quick solution.
Change the Print Order PDF Footer
Start in the Admin and click through to
Store Settings → Checkout → Print Order – Footer
Add your desired details here and click save.
Test Your New Order PDF Footer
Always test your changes to see if they are displaying the way you wanted.
To test go to the Orders module in the Admin, select an existing order or create a new one. Click on Print Order and the PDF will download/open. Scroll to the footer of the order to see your changes.