Sometimes a Web site will rely on a nice looking graphic that suggests the type of navigation it will provide. But for the visually impaired user, there needs to be much more than a simple graphic that you hope the user will click on based on visual cues. Screen readers get the text to read from an IMG tag's alt attribute, so make sure to include it. Some designers are focused on a pixel-perfect font sizing design, which rings accessibility alarm bells. If your site is to be properly accessible to partially sighted users, your fonts must resize and flow when the user selects larger text.
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