WordPress - Remove inline <img> sizes / attributes

gistfile1.aw

<?php

// Remove <img> dimensions
// -------------------------------------------------------------
add_filter( 'post_thumbnail_html', 'remove_thumbnail_dimensions', 10 );
add_filter( 'image_send_to_editor', 'remove_thumbnail_dimensions', 10 );
add_filter( 'the_content', 'remove_thumbnail_dimensions', 10 );

function remove_thumbnail_dimensions( $html ) {
    $html = preg_replace( '/(width|height)=\"\d*\"\s/', "", $html );
    return $html;
}

// Remove <br /> from [gallery] output
// -------------------------------------------------------------
add_filter( 'the_content', 'remove_br_gallery', 11, 2);
function remove_br_gallery($output) {
    return preg_replace('/\<br[^\>]*\>/', '', $output);
}

?>