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Home Page

• CSS HTML Validator Home Page (www.htmlvalidator.com)

Downloads

• CSS HTML Validator Pro Trial
• CSE HTML Validator Lite (discontinued)
• Download Paid Version (for licensed users)
• Download Dictionaries for the Spell Checker

Buying & Upgrading

• Buy New License
• Buy for the Classroom
• Prepaid Certificates (now 100% electronic)
• Buy an Upgrade
• Buy a Site License
• Priority Support and Maintenance (PS&M)

Products & Testimonials

• CSS HTML Validator Enterprise
• CSS HTML Validator Professional (Pro)
• CSS HTML Validator Home Edition (formerly CSS HTML Validator Standard)
• htmlval for Linux (Linux command line tool)
• htmlval for Mac (Mac/macOS command line tool)
• CSE HTML Validator Lite (discontinued)
• Customer Testimonials
• What's New?

Product Information & Features

• General Product Information
• Check Entire Websites with the Batch Wizard
• Validating a 'live' DOM with Google Chrome
• Fix HTML / Repair HTML with CSS HTML Validator
• Accessibility Testing & Section 508 Testing
• PHP Script Syntax Checking
• Edition Comparison Chart
• Old/Obsolete: About Government of Canada's Common Look and Feel (CLF / CLF 2.0) Support

Support

• Main Support Page
• Priority Support and Maintenance (PS&M)
• CSS HTML Validator FAQ
• Online Support Forum
• Registration Key Sender (Lost your license key?)
• Update Your Email Address in Our Database
• Set or Update Your Email Preferences
• Run CSS HTML Validator on a Mac or Linux
• CSS HTML Validator on Wine (Everything you need to know)
• Contact Us

General/Miscellaneous

• How CSS HTML Validator Can Be Useful to You
• Why Validate Your Pages?
• Why is CSS HTML Validator Better?
• Improving your website's search engine optimization (SEO)
• Learn HTML & CSS
• CSS HTML Validator News
• Recommended Web Developer Services, Software, and Other Resources
• CSS HTML Validator Integration with Other Applications
• Recommend CSS HTML Validator to a Friend or Coworker

Screenshots & Demonstrations

• CSS HTML Validator Online Demos
• CSS HTML Validator Screenshots

Documentation

• CSS HTML Validator 2023/v23
• CSS HTML Validator 2022/v22
• CSS HTML Validator 2021/v21
• Old/Obsolete (but still available): 2020/v20 • 2019/v19 • 2018/v18 • v17 • v16

Social Media

• CSS HTML Validator Facebook Page
• CSS HTML Validator on Twitter

Developer Information

• Developer Information
• How to use CSS HTML Validator's DLL (validation engine) in your own apps.

About Links

• Our Company
• Our Policies (including Privacy Policy/Privacy Notice)
• Our Philosophy