To display the featured image at the bottom of every WordPress post, you can add the following code snippet to your child theme’s functions.php file:

function add_featured_image_to_bottom($content) {
    if (is_singular('post') && is_main_query()) {
        if (has_post_thumbnail()) {
            $featured_image = get_the_post_thumbnail(null, 'full', array('class' => 'featured-image-bottom'));
            $content .= '<div class="featured-image-wrapper" style="margin-top: 30px;">' . $featured_image . '</div>';
        }
    }
    return $content;
}
add_filter('the_content', 'add_featured_image_to_bottom');
Code language: PHP (php)

Explanation:

• is_singular('post') ensures it only runs on single post pages.
• is_main_query() avoids affecting secondary queries (e.g., in widgets).
• get_the_post_thumbnail() fetches the featured image.
• The image is appended to the bottom of the post content using the the_content filter.

Optional: Custom Styling via CSS

You can also style it by adding this to your child theme’s style.css:

.featured-image-bottom {
    width: 100%;
    height: auto;
    display: block;
    margin-top: 20px;
    border-radius: 8px;
}
Code language: CSS (css)