Our web spider will crawl your site and check up to 5,000 pages for HTML5 conformance and accessibility, with a single click.
You can also submit an XML sitemap to specify exactly the pages to validate, for increased performance.
That is, it will check that it complies with the CSS standards set by the W3 Consortium.
But validating a large site with hundreds or thousands of pages would take ages, so you're tempted to skip it. Just submit a starting URL and we'll validate all the internal pages for you. Since our launch, our users have validated accessibility violations.
Just give us a starting URL and we'll visit it to discover its internal pages, validate each of them using the latest versions of the W3C Validator and the axe-core accessibility engine, and produce a detailed report in seconds.
Errors in your code can affect your sites performance and also make a big impact on you sites SEO, search engines check the HTML or XHTML code of your website when searching.
If they find invalid HTML or XHTML code – meaning code that does not follow the official rules, you might be removed from their indexes.