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 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 does not authorize or support portable versions of its Creative Cloud apps.
Downloading software from unofficial "free download" sites exposes your system to several dangers:
: To create a portable version, hackers must bypass Adobe's licensing and authentication mechanisms, which often involves disabling core security features of your operating system. Critical Security Risks