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.

: Enhanced ability to copy and paste vector layers from Adobe Illustrator while maintaining editable text and properties.

: Introduction and refinement of filters like Harmonization (matching color/luminosity between layers) and Landscape Mixer (changing seasons or terrain in landscape photos).

: Because Adobe does not offer an official portable version, these packages are often unauthorized modifications . They may contain malware, lack critical security updates, and can be unstable compared to the official desktop application.

: Some advanced features, such as 3D rendering or certain cloud-based Neural Filters, may not function correctly in portable environments. Do Photoshop have portable version? - Adobe Community

: Updated multithreaded and GPU compositing for smoother navigation of complex documents. Understanding the "Portable" Version

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.