Batch upscale images?

I've created a bunch of images a while back, they are gone from my feed, but now I would like to upscale them. I see I can create a post with the images in Civitai and it detects how they were originally generated, however I don't see any option to upscale them.

There can be dozens of these images so I'd like to upscale them all in one batch operation.

Is there any technique to do this? Either from the website or maybe API?