Navigate to the Dashboard and click on "Settings."
Choose "Invoice" from the options.
Click on "Personalise Invoice."
Select your preferred colour theme; the default is black.
Choose a font style – Arial is the default.
Adjust the font size; the default size is 14.
Pick a template from the available options: Default, Classic, or Minimal.
If no specific template is chosen, PDFs will be generated using the default template.
Manage your logo – upload if not done earlier or update the existing one.
Click "Save draft" to preserve your customization.