Here's the code we're using to set an image file as an option for the site's logo via WordPress' theme customizer:

/* Logo > Image
-------------------------------------------------- */
$wp_customize->add_setting( 'themeslug_logo' );

    new WP_Customize_Image_Control( 
        $wp_customize, 'themeslug_logo', array(
            'label'    => __( 'Logo', 'themeslug', 'themeslug' ),
            'section'  => 'themeslug_header',
            'settings' => 'themeslug_logo',
            'description' => 'Upload a logo to replace the default site name in the header.',

Accordingly, we're displaying the logo like this:

<img src='<?php echo esc_url( get_theme_mod( 'themeslug_logo' ) ); ?>' alt='<?php echo esc_attr( get_bloginfo( 'name', 'display' ) ); ?> Logo' class="img-responsive">

However, in doing so, we realized that we're not setting the image height/ width attributes.

So, what we want to accomplish is to pull the image height/width from the uploaded media file, store them as a variable, and then execute them, like:

    $logo = get_theme_mod( 'themeslug_logo' );
    $logoatts = wp_get_attachment_metadata($logo); // obviously doesn't work
    $logoheight = ; // don't know how to get this
    $logowidth = ; // don't know how to get this
    src='<?php echo esc_url( get_theme_mod( 'themeslug_logo' ) ); ?>'
    alt='<?php echo esc_attr( get_bloginfo( 'name', 'display' ) ); ?> Logo'         
    height="<?php echo($logoheight);?>"
    width="<?php echo($logowidth);?>"

Essentially, where we're running into issues is: we want to get the image width from the file as set per WP_Customize_Image_Control() instead of just the URL.

Thanks in advance

3 Answers 3


Modern answer to this question:

We have WP_Customize_Media_Control control in WP since 4.2 that gives you the attachment id.

This answer was posted on I similar question. You can see the documentation for WP_Customize_Media_Control here.

Exemple of use:

$wp_customize->add_setting( 'my_menu_image' );
        $wp_customize->add_control( new \WP_Customize_Media_Control(
                'priority'    => 10,
                'mime_type'   => 'image',
                'settings'    => 'my_menu_image',
                'label'       => __( 'Image on menu bar', 'my' ),
                'section'     => 'title_tagline',
        ) );

When retrieving the info, you can do this:

$image_id = get_theme_mod( "my_menu_image" );
if ( ! empty( $image_id ) ) {
    $url          = esc_url_raw( wp_get_attachment_url( $image_id ) );
    $image_data  = wp_get_attachment_metadata( $image_id );
    $width = $image_data['width'];
    $height = $image_data['height'];

OK, well, we found a quick and perhaps a bit dirty solution using PHP's getimagesize () function.

Specifically, this is the code:

<?php if ( get_theme_mod( 'themeslug_logo' ) ) : 
    $themelogo = get_theme_mod( 'themeslug_logo' );
    $themelogo_size = getimagesize($themelogo);
    $themelogo_width = $themelogo_size[0];
    $themelogo_height = $themelogo_size[1];
<img src='<?php echo esc_url( get_theme_mod( 'themeslug_logo' ) ); ?>' alt='<?php echo esc_attr( get_bloginfo( 'name', 'display' ) ); ?> Logo' class="img-responsive full" height="<?php echo($themelogo_height);?>" width="<?php echo($themelogo_width);?>">

I'm not sure if this is the best method or not, so if anyone else has a bright idea, I'd love to hear it!


The above answer is definitely the best to get image sizes via the customized here is a bit of extra information.

    // Add your customizer block

        new WP_Customize_Media_Control(
                'label'    => __('Logo', 'theme'),
                'section'  => 'styles',
                'settings' => 'logo',

    // Add your image size to your function.php file
    add_image_size('logo_image_size', 100, 9999, false);

    // Output your media anywhere in your theme
    $logo = get_theme_mod( "logo" );

    if ( !empty($logo) ) { 

        echo wp_get_attachment_image( $logo, 'logo_image_size' ) ;


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