It is possible you may need to edit your printer settings if your printed labels are not filling the entire label, and/or the print on the label is small.
DYMO on PC
Go to the Start Menu and open the Control Panel, then select "Devices and Printers".
Then, right-click your thermal printer and select "Printing Preferences".
Go to "Advanced Options".
Select your paper size (usually listed as 4x6 or 1744907).
Click “OK” and then “Apply” at the bottom of the Printing Preferences window.
Note: If Paper Size is not listed in the Advanced Options tab, it may be necessary to select the "Printing Defaults" button at the bottom, choose the Options tab, and set the Paper Format to 'inch' and the Size width and height to 4 and 6.
DYMO on MAC
If you are printing small PDF labels via your web browser, select your browser from the links below to view the recommended solution.
Chrome: How to set default printer paper size on a Mac
Firefox: How to set default printer paper size on a Mac
Safari: How to set default printer paper size on a Mac
If your labels are printing small ONLY via XPS, use the link below to set the label size in the XPS Ship Printer Setup.