Thumbnail and image management

I made my own, but I only included the basic parameters. Just place this code in your theme’s functions.php file. You will need to update the path to timThumb.

// [timThumb id="123" w="300"]
function timThumb_func( $atts ) {
    extract( shortcode_atts( array(
        'id' => '',
        'w' => '',
        'h' => '',
        'q' => '90'
    ), $atts ) );

    $timThumbPath="Path/to/timThumb.php";
    $image = wp_get_attachment_image_src( $id );

    if(!$image) {
        return
    } else {
        return '<img src="'.$timThumbPath.'?src=".$image[0]."&w='.$w.'&h=".$h."&q='.$q.'" />';
    }
}
add_shortcode( 'timThumb', 'timThumb_func' );