# Active Theme Column in the Network Sites List

> Shows the theme each site uses in Network Admin > Sites, so you know which sites a theme update or removal affects.

- Type: PHP
- Runs: Admin only
- Category: [Multisite](https://wpide.com/library/category/multisite/)
- Tags: network-admin, sites, themes, columns
- Author: WPIDE Team
- Installs: 0
- Updated: 2026-10-28
- Page: https://wpide.com/library/ms-sites-active-theme-column/

## Code

```php
if ( ! is_multisite() ) {
    return;
}

add_filter( 'wpmu_blogs_columns', function ( $columns ) {
    $columns['wpide_theme'] = __( 'Theme' );

    return $columns;
} );

add_action( 'manage_sites_custom_column', function ( $column, $blog_id ) {
    if ( 'wpide_theme' !== $column ) {
        return;
    }

    $stylesheet = get_blog_option( $blog_id, 'stylesheet' );
    $theme      = $stylesheet ? wp_get_theme( $stylesheet ) : null;

    if ( ! $theme || ! $theme->exists() ) {
        echo esc_html( $stylesheet ? $stylesheet : '—' );
        return;
    }

    echo esc_html( $theme->get( 'Name' ) );

    if ( $theme->parent() ) {
        echo '<br><small>' . esc_html( sprintf( 'child of %s', $theme->parent()->get( 'Name' ) ) ) . '</small>';
    }
}, 10, 2 );
```

## Notes

Reads the stylesheet option of each site directly instead of switching blogs, so it costs one cached query per row.

## How to use it

Install the free WPIDE plugin (https://wordpress.org/plugins/wpide/), find "Active Theme Column in the Network Sites List" in its snippet library and add it in one click; or create a new PHP snippet in WPIDE (or any code snippets plugin) and paste the code above. More snippets: https://wpide.com/library/