removing inline styles from wp-caption div

Question

Inline width and height attributes were never a huge problem with images in WordPress, since these were easily overwritten with CSS.

The problem I'm having is that any images with captions are being wrapped in a ID 'attachment_('attachmentnumber') and a class of 'wp-caption' AND they're given inline CSS width and height properties. This is a major pain in the butt, so I'd like to remove the inline styles of this div if at all possible.

Answer 1

To remove the inline width in a clean PHP-way could be done with a filter, as described in the source code: https://core.trac.wordpress.org/browser/trunk/src/wp-includes/media.php#L1587

Returning a zero (or false) will remove it:

add_filter( 'img_caption_shortcode_width', '__return_false' );

Answer 2

You can override inline styles with "!important" like this:

width: 100px !important;

If you want a PHP fix take a look at this: http://troychaplin.ca/2012/06/updated-function-fix-inline-style-that-added-image-caption-wordpress-3-4/

add_shortcode('wp_caption', 'fixed_img_caption_shortcode');
add_shortcode('caption', 'fixed_img_caption_shortcode');
function fixed_img_caption_shortcode($attr, $content = null) {
    if ( ! isset( $attr['caption'] ) ) {
        if ( preg_match( '#((?:<a [^>]+>\s*)?<img [^>]+>(?:\s*</a>)?)(.*)#is', $content, $matches ) ) {
        $content = $matches[1];
        $attr['caption'] = trim( $matches[2] );
        }
    }

    $output = apply_filters('img_caption_shortcode', '', $attr, $content);
    if ( $output != '' )
    return $output;

    extract(shortcode_atts(array(
        'id' => '',
        'align' => 'alignnone',
        'width' => '',
        'caption' => ''
    ), $attr));

    if ( 1 > (int) $width || empty($caption) )
    return $content;

    if ( $id ) $id = 'id="' . esc_attr($id) . '" ';

    return '<div ' . $id . 'class="wp-caption ' . esc_attr($align) . '" style="width: ' . $width . 'px">' . do_shortcode( $content ) . '<p>' . $caption . '</p></div>';
}

or javascript/JQuery:

$(".wp-caption").removeAttr('style');