php – Remove the original image from the server after WordPress generates the thumbnails


I need to remove the original image that gives rise to the WordPress thumbnails after the thumbnails are generated. I have 3 sizes of thumbs that I use, but to prevent the server from having unnecessary files, I need to remove the original one, which usually comes with more than 4000px in dimension and more than 2.5MB in size. I searched for some content related to this issue but I didn't find anything. Removing the original after the thumbnails have been generated is it possible? And if so how can I find the answer?


You can do this using the following code:
(source: How to automatically use resized images instead of originals )

add_filter( 'wp_generate_attachment_metadata', 'replace_uploaded_image' );

function replace_uploaded_image($image_data) 
    // abortar se não houver versão "large" da imagem
    if ( !isset($image_data['sizes']['large']) ) 
        return $image_data;

    // paths do upload e da imagem grande
    $upload_dir              = wp_upload_dir();
    $uploaded_image_location = $upload_dir['basedir'] . '/' . $image_data['file'];
    $large_image_location    = $upload_dir['path'] . '/' . $image_data['sizes']['large']['file'];

    // deletar original

    // renomear a imagem "large"
    rename($large_image_location, $uploaded_image_location);

    // atualizar o metadata da imagem e retornar
    $image_data['width']  = $image_data['sizes']['large']['width'];
    $image_data['height'] = $image_data['sizes']['large']['height'];

    return $image_data;

It is also possible to swap the large version for a custom one, as seen in Auto-modifying original [full size] images :

add_image_size( 'new-large', 1600, 1200 ); 

Then, just replace all occurrences of $image_data['sizes']['large'] with $image_data['sizes']['new-large'] .

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