The format itself is neutral. Downloading pirated commercial games as VPKs is illegal. However, creating and sharing homebrew VPKs (original code, emulators, open-source ports) is generally legal and encouraged.
You’ll need sufficient storage space to hold both the VPK installer files and the applications they install. Many enthusiasts opt for an SD2Vita adapter, which allows you to use a standard microSD card with your Vita, offering much more space than official memory cards. vpk ps vita
A (Vita Package) is the standard file format for installing homebrew applications, games, and utilities on a jailbroken PS Vita. Think of it as the Vita’s version of an Android APK or a Windows EXE—it’s an all-in-one installer that adds a "bubble" (icon) to your LiveArea home screen. 1. Preparing for Installation The format itself is neutral