Most browsers add a header and footer automatically to every page they print. You can remove these to give your documents a cleaner, more professional look.
This is how you may get it done:
Google Chrome, Firefox, and Edge:
1- Click the "Print" button to bring up the print preview screen
2- Click the "More settings" section to expand the options
3- Disable the checkmark on "Headers and footers"
Safari
1- Click the "Print" button to bring up the print preview screen
2- Click the "Show details" section to expand the options
3- Disable the checkmark on "Print headers and footers"
In general, you need to uncheck the option in the browser's print window for the headers and footers.
Note: If you're printing from the Shopify app on iOS, it defaults to the Safari browser, which unfortunately won't have the option to turn off the footer/header information. Therefore, you may set Chrome as the default browser for the iOS device so that it can allow you to remove the footer and header.