How to change header depth globally

[wildwestrom]

How do I make it so that a top-level header * in org mode, be rendered as <h2>? How can I make it so that all heading levels in org mode are pushed down when rendered as markup?
I figured if I have #+TITLE:, I can use that as my <h1> instead.

Here's what I have in mind:

#+TITLE = <h1>
* <h2>
** <h3>
*** <h4>
**** <h5>
***** <h6>
****** error?

[rasendubi]

You can use something similar to this: https://github.com/rasendubi/www.alexeyshmalko.com/blob/9140ab3251804578ed6753ead521ffd3ef54bfbb/src/lib/postprocess.ts#L41 This works on hast tree, so you should use it after uniorg-rehype. As another option, you can implement a similar transformation on uniorg ast by increasing the level for all headings