How to build a custom post template for all categories?

Hi there,

You could try something like this: https://docs.wpshowposts.com/article/use-static-pages-as-category-archives/

Thanks! I found a simpler solution – add some custom CSS code:

article.generate-columns {
	display: none !important;
}

This code removes default posts on the category page, then I can insert any shortcode in category editor:)

You could try something like this: https://docs.wpshowposts.com/article/use-static-pages-as-category-archives/

Which URL structure is preferred in WordPress settings? /%postname%/ or /%category%/%postname%/ ?

If you're using the method I linked to, it has to be the first one. Otherwise, it's up to you :)