Since I am afraid deviantart will die in some decades and I don't want my art lost for ever, I realized I could make a github repository for my old art, organized by date.

Also plan on scanning my pen and paper old drawings (maybe a couple hundreds) on such repository.

Maybe even host it on several sites.
Maybe even code a basic gallery in HTML and CSS to view them and use a basic hosting solution for it.

Is this a good idea?