How to create cover images in dev.to with the title and author's name?

I've been seeing articles here in dev.to with the banner/cover image showing the article's title, the publish date, and the author's name, plus the DEV logo a the right side, similar to the one below:

More examples:

I followed the instruction on this link but I'm having no luck in creating the "auto-generated banner from the article's title".

I did find this link about how "automated images" are created but I was wondering if there's other options that other people here dev.to is using?