Downloading from unofficial sources is not recommended, as there is no official "portable" version of Photoshop provided by Adobe. These downloads are typically "cracked" or modified versions that carry significant security and legal risks. The Reality of "Portable" Photoshop

Adobe Photoshop is designed to be installed on a host operating system to function correctly. Websites offering a "portable" version are providing software that has been modified by third parties.

Downloading software from unofficial "free download" sites exposes your system to several dangers: