Page Template to list all your categories with their title, description and RSS link

page-categories.php

<?php
/**
 * @package WordPress
 * @subpackage Creative Juiz v2
 * Template Name: Category List
 * @see: https://gist.github.com/geoffreycrofte/d3b5c0ab64e97278248df59bc53082f0
 * @author: Geoffrey Crofte
 */

get_header(); ?>

<main class="main-content" id="main-content">
	<div class="inside">
		<div class="part-main">

		<?php
		juiz_breadcrumbs();

		if (have_posts()) : while (have_posts()) : the_post();

		?>

			<div class="article block post-<?php the_ID(); ?> pt-page hentry" id="post-<?php the_ID(); ?>">
				<h1 class="article-title entry-title"><?php the_title() ?></h1>
				<div class="separator"></div>
				<div class="entry-content">
					<?php

					the_content();

			endwhile;
			endif;

			// Get all the categories

			$categories = get_categories();
			$cat_output = '<dl>';

			foreach ( $categories as $cat ) {
				$cat_url = get_bloginfo('url') . '/theme/' . $cat->slug;
				$cat_output .= '
						<dt>
							<a href="'. $cat_url . '" title="' . __('Read articles of the category:', 'juiz') . ' &quot;'. $cat->cat_name .'&quot;">' . $cat->cat_name . '</a>
							<span class="nb_articles">' . $cat -> category_count .' articles</span>
							<a href="' . $cat_url . '/feed" title="' . __('Follow RSS feed of the category:', 'juiz') . ' &quot;'. $cat->cat_name .'&quot;" class="cat-rss"><i class="icon-feed"></i><span class="visually-hidden">RSS</span></a>
						</dt>
						<dd>' . $cat->category_description . '</dd>
				';
			}

			$cat_output .= '</dl>';

			echo $cat_output;
		?>
				</div><!-- .corps -->
			</div><!-- .article.block -->

		<?php
			edit_post_link(__('Edit this page', 'juiz'), '<p>', '</p>');
			comments_template();
		?>

		</div><!-- .part_main -->
	</div><!-- .inside -->
</main><!-- .main_content -->

<?php get_sidebar(); ?>
<?php get_footer(); ?>