Official sources from Adobe Community and Adobe Wiki highlight several critical issues: What’s new in Adobe Photoshop on desktop
While the convenience of a "portable" Photoshop is tempting, it is important to navigate this space carefully.
These versions are unofficial "portablised" mods created by third parties. Security Risks: adobe photoshop cc lite portable 1412 paf format full better
Because "Lite" versions remove core files, you may find that certain filters or "Save for Web" functions crash the program unexpectedly.
The .paf format allows the software to run from a USB drive or external storage without a standard installation on the host computer. Official sources from Adobe Community and Adobe Wiki
Portable versions are often created by third-party websites. These can sometimes be found through a web search. However, these versions might not always be up-to-date or officially supported.
A free, lightweight version for basic mobile and web editing. Adobe Photoshop on the Web However, these versions might not always be up-to-date
While official Adobe Photoshop CC offers a vast array of tools, "Lite" portable versions usually strip away non-essential components—such as help files, bridge, and extra plugins—to reduce file size.