Do you have a GitHub account? You can now post an issue with CSS HTML Validator on GitHub. This includes technical support issues, bug reports, and feature requests.
Visit our web-based support forum for CSS HTML Validator. You'll need to register (create a forum account) before posting a new topic or replying to an existing topic.
Note that you may need to be logged in with a forum account before the forum search option is available.
VIP code: The VIP code you'll need to register for a forum account (if you don't already have one) is 27821. The VIP code helps prevent forum spam.
Visit our list of frequently asked questions and answers.
Are you already a registered user? Have you forgotten or lost your registration key? Request that your registration name and registration key be emailed to you instantly.
Did your email address change since you registered CSS HTML Validator with us? Update your email address in our database.
You can buy priority support and maintenance for one to two years to receive priority support and guaranteed free major upgrades.
Are you a registered user and want to update or set your email preferences? We highly recommend that you opt-in to allow us to email you update and upgrade notices.
If you cannot find the answer to your question through one of these links and your question does not belong in the online forum, then please contact us.