• Latest W3C Markup Validation Service user agents:
  • User agent
    W3C_Validator/1.3
    W3C_Validator/1.305.2.12 libwww-perl/5.64
    W3C_Validator/1.767
    W3C_Validator/1.654
    W3C_Validator/1.3 http://validator.w3.org/services
    Validator.nu/LV http://validator.w3.org/services
    Validator.nu/LV