Open a web page (except on packagetrackr.com) on your browser and click on the bookmarklet link.
Click on the track it! link to get tracking information.
Sign up / Sign in to save tracking number to your Packagetrackr Account
Packagetrackr is an all-in-one package tracking tool for all your shipments. Packagetrackr will remember all of your tracking numbers and pull delivery status information from dozens of carrier with extra features not offered on the carriers' sites.