Don’t use platform specific technologies Usability Guideline


Design pages for popular operating systems. Don’t use platform specific technologies like ActiveX.


This ActiveX control only runs on Windows. Use a W3C standard technology like HTML5 instead.

Applicable standards

Note: The website has been down since July 2020, although is still operating and the PDF version of the guidelines is still available.

Change history

  • 5.2 May 2013 Updated priority to match April 2013 version of guidelines.
  • 1.0 Feb 2007 Added.

This page describes a web site issue detected in HTML documents by SortSite Desktop and OnDemand Suite.

Rule ID: UseGov4.3b