This is essentially a "portable" Photoshop in your browser. It has a near-identical layout to CS6 and requires zero installation.
If portability is your main goal, use Photopea (works offline if you enable service workers) or a portable GIMP build. If you need Photoshop’s exact workflow, subscribe to CC and accept the installation. photoshop cs6 portable mac work
: CS6 features Background Saving , allowing you to continue working while a large file saves in the background. Recommended Alternatives for Modern Macs This is essentially a "portable" Photoshop in your browser