You can use the online WAVE tool by entering a web page address (URL) in the field above. WAVE Firefox and Chrome extensions are available for testing accessibility directly within your web browser - handy for checking password protected, locally stored, or highly dynamic pages. We also have a WAVE Runner service, subscription WAVE API and a stand-alone WAVE API for easily collecting data on many pages. If you need enterprise-level reporting and tracking of accessibility, WAVE powers the Pope Tech accessibility tool.
Predictable: Websites should operate in ways that are familiar and predictable. When a new page element is in focus, the website should not initiate a change of context such as opening a new window or going to a new page. In addition, the website should warn of user-initiated changes of context ahead of time, for instance through the use of a submit button. Navigation and labeling should remain consistent between different pages.
Error prevention on important forms (3.3.4): For pages that create legal commitments or financial transactions or any other important data submissions, one of the following is true: 1) submissions are reversible, 2) the user has an opportunity to correct errors, and 3) confirmation is available that allows an opportunity to review and correct before submission.