Cropping a full size 8.5" x 11" page to a 4" x 6" label

Some shipping platforms only provide you with a full page (8.5" x 11") document.
Frequently, they use half the page for the shipping label and the other half for the receipt or packing slip.
While there are many ways to split this page into a 4" x 6" label size, here is our favorite method:

Using Adobe "Take a Snapshot"

Download Adobe Reader if you do not have it already from the Adobe website.
Save your label as a PDF file
Open the file in Adobe Reader
Rotate the label if needed by going to View -> Rotate View
Go to Edit -> More - > Take a Snapshot
Click and drag the box over your label
Go to File -> Print
If the preview looks good, click "Print"

Official Adobe guide: Print portion of a PDF page using Acrobat or Reader

How can I crop multiple pages in the same document at once?

1) On Adobe Acrobat you are able to crop several / all pages together. Please see: https://helpx.adobe.com/acrobat/using/crop-pdf-pages.html

2) Briss is a free open-source application available for cropping PDF pages at once. It may take a little while getting used to it but once you are comfortable with it, it is pretty fast: https://sourceforge.net/projects/briss/

3) For Mac: There is a third-party company that offers software for cropping labels: https://www.youtube.com/watch?v=Mos4GNnRZ5c