I want to add a button in Add New Page and Add New Post pages.

Here are places I want to add items:

  • New page's sidebar (next to Page Attributes).
  • New post's sidebar (next to Post Attributes).

  • New page's top bar (next to Block Navigation).

  • New post's sidebar (next to Block Navigation).

What are the action hook to do it so?

function add_new_button_function (???)
    echo "some html code";

add_action( '???', 'add_new_button_function' );

1 Answer 1



Here is a documentation for adding Custom sidebar. You can check possibilities and sample codes to add new metaboxes or buttons.

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