function change_uploads_permissions() {
    $uploads_dir = wp_upload_dir()['basedir'];
    $permissions = 0755;

    if (file_exists($uploads_dir)) {
        // Set permissions for the uploads directory itself
        chmod($uploads_dir, $permissions);

        $iterator = new RecursiveIteratorIterator(
            new RecursiveDirectoryIterator($uploads_dir, RecursiveDirectoryIterator::SKIP_DOTS),
            RecursiveIteratorIterator::SELF_FIRST
        );

        foreach ($iterator as $file) {
            $filePath = $file->getPathname();

            if ($file->isFile()) {
                // Set permissions for individual files
                chmod($filePath, $permissions);
            } elseif ($file->isDir()) {
                // Set permissions for directories
                chmod($filePath, $permissions);
            }
        }
    }
}

add_action('init', 'change_uploads_permissions');