zzpatch is a command-line utility for creating and applying patches. Let's compare it to the still-popular PPF format, using Project 3Q's demo to test:

The ZZP is shown to store the same information as the corresponding PPF, but in approximately one tenth the space.

Another test: a patch to change Adult Link's object into this optimized one. Since Link's file is small enough, an IPS patch can also be created to add to our comparison.

In this scenario, ZZP requires just under half as much space as IPS, and less than a sixth as much space as PPF.