Web Development
Web Developer Guidelines
Visual Design Recommendations

Checkpoint 5.7 - Core

Site is functional and readable without images

WCAG 1.0 Priority 1

WCAG Guideline 1. Provide equivalent alternatives to auditory and visual content.

Some users may not be able to see images, use text-based browsers, or turn off the display of images to better utilize a slow internet connection.

Text is considered accessible to almost all users since it may be handled by screen readers, non-visual browsers, and braille readers. It may be displayed visually, magnified, synchronized with a video to create a caption, etc. Where a screen magnifier is being used, text-based images become very pixelated and can be very difficult to read, whereas pure text is simply magnified.

Requirement

When the web site is designed containing non-textual information such as images, applets, sounds, multimedia presentations, etc. supplement that information with textual equivalents wherever possible.

Checking Tool

  • Internet Explorer - AIS Toolbar: Images > Toggle Images/Alt
  • Firefox - Web Developer's Toolbar: Images > Outline Images > Images Without Dimensions
  • Firefox - Web Developer's Toolbar: Images > Disable Images > All Images

Information Source

The original source of this information is located on the W3C web site  (www.w3.org/TR/WCAG10-TECHS/#tech-text-equivalent)

 

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