Specific Post Format Image Thumbnail
From your comment: This is all I meant: add_image_size( ‘index-thumb’, 640, 250, true ); add_image_size( ‘image-format’, 630, 9999, true ); So, let’s assume you create custom image sizes for gallery and video (as well as a “default” size, which we’ll call standard), perhaps like so: <?php add_image_size( ‘index-standard’, 640, 250, true ); add_image_size( ‘image-gallery’, 630, … Read more