Convert pj to psd Online: pj2psd

You can use Tom's Editor to easily convert images from
HP PaintJet file .PJ to Adobe Photoshop .PSD.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

PJ

HP PaintJet file is an image format with extension PJ.

PSD

PSD is in internal image format of Adobe Photoshop. It can store all the features offered by Photoshop, like layers and paths. Images can be compressed or not.