Note: The easiest setup would be to connect your UPS account to Rollo Ship Manager. You can then skip steps below.
UPS provides free software for all UPS customers called WorldShip. This application is optimized for printing labels in a 4 x 6 format at high-speed and with efficiency. The UPS.com website, on the other hand, has more limitations. Please see this article for setting up WorldShip with Rollo.
If you don't like using WorldShip, we would alternatively recommend using Rollo Ship Manager or another commercial solutions discussed in this article. They connect to UPS.com and print your label in a 4 x 6 format using your negotiated shipment rates. They are online, user-friendly, and you can set them up in just minutes.
If you definitely want to ship directly from UPS.com, then there are a few ways to print from UPS.com:
1) You may leave the settings as default on UPS.com and crop the label using the steps in this article.
2) Install Rollo as a UPS Thermal Printer. Please note UPS.com Thermal Printers only print to 4 x 8 (not 4 x 6) label sizes, so you must ensure that you have the correct label. This size limitation does not exist with UPS WorldShip or Commercial Solutions as discussed above. To install the UPS Thermal Printer, please follow this guide from UPS and install Rollo as the UPS Thermal 2844 printer.