How to add an automatic refresh in WordPress for a Page/Post or an embedded OneDrive/Excel HTML Code?

Question

Perhaps this little function below will help you out.
It will add, on the front-page (and/or home page), automatically a meta element, which will take care for a page refresh after a given time interval. (10 seconds in the example below)
I wouldn’t set the time shorter then 3 seconds but that is up to you.

Please backup functions.php first before adding below code into it.

/**
 * Auto add a page refresh into <head> for Home and/or Front page
 * 
 * Info {@link https://en.wikipedia.org/wiki/Meta_refresh}
 *      {@link https://developer.wordpress.org/reference/hooks/wp_head/}
 *      {@link https://developer.wordpress.org/reference/functions/is_home/}
 *      {@link https://developer.wordpress.org/reference/functions/is_front_page/}
 *      
 * @since WordPress @version 1.5.0
 * Checked functionality with WordPress @version 5.5.1
 */
 add_action( "wp_head", "add_meta_refresh_timer_wpse374042" );
 function add_meta_refresh_timer_wpse374042() { 
     // Change/Remove to own preference
     if( is_front_page() || is_home() ) 
    {
        echo "<!-- Auto refresh --> \n";
        // Adjust amount of seconds to own preference
        echo "<meta http-equiv=\"refresh\" content=\"10\" />";
    }
}

Good luck.