Rocket Validator automatically scans your sites for accessibility issues using the W3C Validator,
hosted on our own servers and integrated into our web crawler.
50,000 Accessibility and HTML checks per month. Fully automated.
Let our automated scanner check your large sites using Axe Core and W3C Validator.
HTML issues tagged as async.
defer boolean attributes of the
<script> element control how an external script should be executed once it has been downloaded. The
async attribute makes sense when an external script (defined with the
src attribute) is loaded, or when defining a script of type
When was the last time you validated your whole site?
Keep your sites healthy checking for A11Y/HTML issues on an automated schedule.