Convert pj to webp Online: pj2webp

You can use Tom's Editor to easily convert images from
HP PaintJet file .PJ to WebP .WEBP.
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.

WEBP

WebP is an image format with extension WEBP.