Photoshop "portable" is a well known hack. It's pirated and illegal, end of story. This isn't the first time we've heard about it.
: They allow users to carry their workspace on external storage and use it on different computers without leaving behind registry entries or system files.
: Updated multithreaded and GPU compositing for smoother navigation of complex documents. Understanding the "Portable" Version
A "portable" version of Photoshop typically refers to a third-party modification designed to run from a USB drive or folder without formal installation on the host machine.
: Introduction and refinement of filters like Harmonization (matching color/luminosity between layers) and Landscape Mixer (changing seasons or terrain in landscape photos).
: Improved "Object Finder" capability that can automatically detect and highlight multiple complex objects within an image for quick masking.