Skip to main content

These extensions and wallpapers are made for the Opera browser.

Icon for (X)HTML5 Checker

(X)HTML5 Checker

0.0 / 5
  • Your rating
Total number of ratings: 0

Privacy policy

The add-on uses the HTML validation service APIs available on this page - https://validator.w3.org/nu/. If you wish to receive more information on the validation of the html code offered by W3C you can find all the information on this page - https://validator.w3.org/nu/about.html

Back to (X)HTML5 Checker details