Get Blog Posts Page URL in WordPress

get-blog-posts-page-url.php

<?php

/**
 * Get blog posts page URL.
 *
 * @return string The blog posts page URL.
 */
function km_get_blog_posts_page_url() {

	// If front page is set to display a static page, get the URL of the posts page.
	if ( 'page' === get_option( 'show_on_front' ) ) {
		return get_permalink( get_option( 'page_for_posts' ) );
	}

	// The front page IS the posts page. Get its URL.
	return get_home_url();
}