Shrink is a new iPhone tweak available in Cydia that let you resize your iPhone’s Springboard icons.
Shrink downscales your SpringBoard icons so that you can fit more on one page! When using Shrink, there’s no need to create a small size icons set, SSH into iPhone and transferring icons to iPhone.
Shrink is compatible with WinterBoard, Iconoclasm and Infinidock. You can purchase Shrink for iPhone from Cydia store for $0.99.