Wordpress, creating demo data for a theme?

Question

WordPress

Good afternoon.
I am creating a theme for wordpress. For me, it works with shortcodes and a certain structure of categories and pages.
Tell me how to make it possible to install demo data after activating the theme. Met on some topics such. If I'm not mistaken, then when installing the theme, a plugin was automatically installed in which you could install demo data.

Answer 1

Import is already built into WP core. The simplest thing is to prepare an XML file for import and attach the deployment instructions.

Answer 2

Some premium themes use similar plugins to quickly import data
https://www.wordpress.org/plugins/one-click-demo-import/