<?php
$p = get_post(41);
$rendered = apply_filters('the_content', $p->post_content);
echo "shortcode cru: " . (preg_match('/\[ut_|\[vc_/', $rendered) ? "SIM (falhou)" : "nao (ok)") . "\n";
echo "h1 count: " . substr_count($rendered, '<h1') . "\n";
echo "bytes: " . strlen($rendered) . "\n";