The web’s governing body has launched a new validation tool called Unicorn that checks the quality of your website’s code against multiple web standards at the same time.
You can find the new Unicorn “all-in-one validator” on the Worldwide Web Consortium (W3C) website at validator.w3.org/unicorn/.
The W3C maintains a number of free web-based tools for checking whether your web code is valid, and Unicorn makes several of these tools available under a single interface. Just plug in a URL and you can see your results for all of these tests on a single page:
- HTML/XHTML markup validator
- CSS validator
- Atom or RSS feed validator
- mobileOK, which tells you how friendly your site is to mobile visitors