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2bweb.biz Significance of Accessibility

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Quick reference: Web Content Accessibility Guidelines (WCAG) 2.0

Success criterion 1.4.8 - Visual Presentation

For the visual presentation of blocks of text, a mechanism is available to achieve the following:

  1. Foreground and background colors can be selected by the user.
  2. Width is no more than 80 characters or glyphs (40 if CJK).
  3. Text is not justified (aligned to both the left and the right margins).
  4. Line spacing (leading) is at least space-and-a-half within paragraphs, and paragraph spacing is at least 1.5 times larger than the line spacing.
  5. Text can be resized without assistive technology up to 200 percent in a way that does not require the user to scroll horizontally to read a line of text on a full-screen window.

Display success criteria:

Currently 61 of 61 Success Criteria are being displayed.

Principles, guidelines and success criteria

Principle 1 - Perceivable - Information and user interface components must be presentable to users in ways they can perceive.

Guideline 1.1 - Text Alternatives

Guideline 1.2 - Time-based Media

Guideline 1.3 - Adaptable

Guideline 1.4 - Distinguishable

Principle 2 - Operable - User interface components and navigation must be operable.

Guideline 2.1 - Keyboard Accessible

Guideline 2.2 - Enough Time

Guideline 2.3 - Seizures

Guideline 2.4 - Navigable

Principle 3 - Understandable - Information and the operation of user interface must be understandable.

Guideline 3.1 - Readable

Guideline 3.2 - Predictable

Guideline 3.3 - Input Assistance

Principle 4 - Robust - Content must be robust enough that it can be interpreted reliably by a wide variety of user agents, including assistive technologies.

Guideline 4.1 - Compatible

Conformance Requirements

In order for a Web page to conform to WCAG 2.0, all of the following conformance requirements must be satisfied:

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