Advice Needed How to rip models from artstation ?

Hi guys I was wondering if someone could tell me a way to rip models from artstation in json format. I also had another question, i know how to rip models from sketchfab but those models come only in obj format, is there a way to get them in json as well ?

Don't do this please. Support the hardworking artists.

I agree with jnk121. But if no contact with the artists is possible i do understand some els his opinion. I have the same issue. Would like to pay to use it for my self. But you can only look to the picture on the website....
(I'm not only talking about artstation and sketchfab website like )

don't do this, but also, if they protect it by watermark, you can use inpaint