Some browser-based solution, without any installation :
From a bit of Googling, it seems Google Drive lets you (pre)view PSD files.
Also I can see there's an online Photoshop look-alike called photopea
which can open PSD files. It seems in active development, so it should open the recent variants of PSD format. However I don't know how they work, so I would trust this service for hobby graphics which I don't care if they land anywhere on the Internet, but I would be reluctant to use it for professional files (At least not without further research) :