Remove width and height attributes from [gallery] output

2 comments

1. I can think of a couple of options:

   1. Create a new shortcode, e.g. my_gallery. You can copy the code in
      wp-includes/media.php. Look for the code staring with
      add_shortcode('gallery', 'gallery_shortcode'); and then the actual
      function. Rename / modify as needed. The actual img link is within
      the $link variable

   2. Use something like this (untested), which should work but might
      strip-out all width/height from any link.

   _

   add_filter('wp_get_attachment_link', 'remove_img_width_height', 10, 1);
   
   function remove_img_width_height($html) {
       $html = preg_replace( '/(width|height)="d*"s/', "", $html );
       return $html;
   }
   

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2. if you set image size in function.php as a “gallery”

   add_image_size( 'gallery', 200, 120, true );
   

   you can remove width and height of specific image size such as “gallery”:

   add_filter('wp_get_attachment_link', 'remove_img_width_height', 10, 4);
   
   function remove_img_width_height( $html, $post_id, $post_image_id,$post_thumbnail) {
       if ($post_thumbnail=='gallery'){
       $html = preg_replace( '/(width|height)="d*"s/', "", $html );
       }
       return $html;
   }
   

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