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Placeholder images in grid

  • Is there a way to automatically put a placeholder image in the grid for posts with no featured image?

  • Hi there,

    1. You can create a block element – content template for the CPT archive, then use the image block of GenerateBlocks plugin to pull the featured image.

    2. Add a CSS class to the image block, eg. payment-featured-image.
    Adding CSS class(es):

    Screenshot for your reference:

    3. Add this PHP to add a fallback image as the placeholder when there’s no featured image, change 100 to the actual fallback image ID which can be found in the image editor’s URL.

    add_filter( 'generateblocks_dynamic_image_fallback', 'custom_dynamic_image_fallback', 10, 3 );
    function custom_dynamic_image_fallback( $featured_image_id, $attributes, $block ) {
        if ( isset( $attributes['className'] ) && strpos( $attributes['className'], 'payment-featured-image' ) !== false ) {
    	$featured_image_id = get_post_thumbnail_id(get_the_ID());
            $fallback_image_id = '100'; 
            if ( $featured_image_id ) {
                return $featured_image_id;
        return $fallback_image_id;
  • Thanks is there not a way to use hooks rather than installing blocks and going down that route? My grid is just using the one that comes with the standard generatepress plugin

  • Try this PHP, change 5 to the fallback image ID.

    function custom_fallback_featured_image() {
        // Check if the post has a featured image
        if ( has_post_thumbnail() ) {
        } else {
            // If no featured image, use fallback image with ID 5
            $fallback_image_id = '5';
            $fallback_image = esc_url( wp_get_attachment_image_url( $fallback_image_id, 'full' ) );
            // Generate the output with the featured image URL
            $output = printf(
                '<div class="post-image">	
                    <a href="%1$s">
                        <img src="%2$s" alt="Fallback Image">
                esc_url( get_permalink() ),
            return $output;
    add_action( 'generate_after_entry_header', 'custom_fallback_featured_image' );
  • fantastic, thank you, i added is_archive() so it only ran on the archives

  • You are welcome   🙂

Viewing 6 posts - 1 through 6 (of 6 total)
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