Register custom images sizes in wordpress functions.php and make them accessible via the media manager. #wordpress #php

Register image sizes.php

/* ==========================================================================
   Register image sizes
   ========================================================================== */

if ( function_exists( 'add_image_size' ) ) { 
    add_image_size( 'blog-featured', 940, 330, true ); // cropped
    add_image_size( 'testimonial-thumb', 100, 100, false ); // not cropped
} 


add_filter( 'image_size_names_choose', 'my_custom_sizes' );
function my_custom_sizes( $sizes ) {
    return array_merge( $sizes, array(
        'testimonial-thumb' => __('Testimonial thumb'),
        'blog-featured' => __('Blog featured'),
    ) );
}