I have a page showing custom post type, but I don't know how to link to the full size image that can be opened by a lightbox plugin.

the post page is like:

 <div class="content" id="main-content">
     'post_type' => 'painting',
  $the_query = new WP_Query($args);

  <?php if ($the_query->have_posts() ): while ($the_query->have_posts() ):$the_query->the_post(); ?>

<div class="painting col-md-3 col-sm-6" id="inside">
    <div class="painting-image">
        <?php the_post_thumbnail('painting-thumbnail'); ?>
        <span class="overlay"></span>

<?php endwhile; ?>
<?php endif; ?>

I know I should use something in an {a} tag, but I don't find how to link to the source. I've also read the wp codex on 'wp_get_attachment_image_src', but it wasn't helpful. Thanks for further help!


The following are examples for displaying the post's featured image, which is linked to the image's full-sized version.

For WordPress version 4.4.0 and above, you can use the_post_thumbnail_url(), like this:

<a href="<?php the_post_thumbnail_url( 'full' ); ?>" class="thickbox"><?php // wrapped
    the_post_thumbnail( 'painting-thumbnail' ); ?></a>

For earlier versions of WordPress, you can use wp_get_attachment_image_src(), like this:

$post_thumbnail_id = get_post_thumbnail_id();
$info = wp_get_attachment_image_src( $post_thumbnail_id, 'full' );
<a href="<?php echo esc_url( $info['0'] ); ?>" class="thickbox"><?php // wrapped
    the_post_thumbnail( 'painting-thumbnail' ); ?></a>

You'd replace thickbox with the proper class which will open the full-sized image in a modal/popup.

  • thanks, but it still opens the raw full size image in the browser window, although I'v checked the option in plugin which enables the WordPress link images. – Omid Akbari Kh. Apr 5 '18 at 14:59
  • Perhaps conflict with other scripts, or the necessary scripts are not loaded. If you could share the page URL, I'd happily help you solve the problem. – Sally CJ Apr 11 '18 at 3:35
  • 1
    Great tip! There was a conflict between jqurey and bootstrap. Solved it and the code works fine. Thank you so much @sally-cj – Omid Akbari Kh. Apr 13 '18 at 11:43

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