How can I add a button to a posts page? what hook can be used to add a custom button
I'd like to place it next to, or near, the "Publish/update" button, or modify the publish button for triggering Pre-publish changes and export content from The new Gutenberg editor Blocks.
other tried approach's.
add button to post edit page when post_status=publish
How to add a button to custom post type's posts-page
