To update your Etsy settings so it generated 4x6 shipping labels:

 

1) Sign in to Etsy.com.

2) Click Shop Manager.

3) Click Orders & Shipping.

4) Click View shipping labels.

5) Click Options.

6) Select Format my labels for 4x6 Label printers.

 

Please note that after you change the label format to 4 x 6, only new labels will be generated correctly. Kindly void any previously generated labels and create new ones.

 

Article content source:https://help.etsy.com/hc/en-us/articles/360001968348?segment=selling