What is WCAG accessibility compliance?
The Four Principles of Accessibility
The Worldwide Wide Consortium (W3C) bases Web Content Accessibility Guidelines (WCAG) around four principles of accessibility to provide a single shared standard. Qtrac Web pages use elements such as alternative text to follow ADA compliance. All Qtrac web pages are fully accessible for people with disabilities.
The four principles on which we would validate our software are based upon:
- Perceivable: The contents of the page can be detectable to everyone, no matter their disability. They can’t be hidden from people who can’t see small print, for example.
- Operable: All users must be able to interact with the components of the Qtrac web pages like Kiosks, Mobile Kiosks, Monitors and Stations using a mouse, keyboard, swipe gestures, and voiceover. Our Software strongly supports WCAG 2.0 AA Guidelines.
- Understandable: All users must be able to understand the meaning of the information on the page, as well as the instructions for interacting with the page’s components.
- Robust: No matter what a web page looks like or what it contains, it has to remain able to be used and understood on a wide variety of devices using a wide range of assistive technologies like screen readers.
Compliance to WCAG accessibility can be achieved with 2 distinct levels of features as outlined below.
Level 1 Compliance Features (A)
- Provide text alternatives for non-text content
- Provide an alternative to video-only and audio-only content
- Provide captions for all videos which include audio
- Use more than one sense for all instructions
- Not use presentation that relies solely on color
- Make all functionality accessible by keyboard only
- Ensure users have control over time limits
- Provide user controls for moving content
- Provide a “skip to content” link
- Use clear and helpful page titles
- Present items in a logical order
- Make the purpose of every link clear from its context
- Ensure page elements do not change when they receive focus on input
- Clearly identify input errors
Level 2 Compliance Features (AA)
- Ensure the contrast ratio between text and background is at least 4.5:1
- Ensure text can be resized to 200% without loss of content or function
- Not use images of text
- Offer several ways to find pages
- User clear headings and labels
- Ensure the keyboard focus is clear and visible
- Inform users when the language on a page changes
- Use all menus consistently
- Use all icons and buttons consistently
- Suggest fixes when users make error