Web Accessibility Wizard

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The visual presentation of text and images of text has a contrast ratio of at least 4.5:1, except for the following: Large Text: Large-scale text and images of large-scale text have a contrast ratio of at least 3:1; Incidental: Text or images of text that are part of an inactive user interface component, that are pure decoration, that are not visible to anyone, or that are part of a picture that contains significant other visual content, have no contrast requirement. Logotypes: Text that is part of a logo or brand name has no minimum contrast requirement.
  • WCAG type: Success Criteria
Except for captions and images of text, text can be resized without assistive technology up to 200 percent without loss of content or functionality.
  • WCAG type: Success Criteria
If the technologies being used can achieve the visual presentation, text is used to convey information rather than images of text except for the following
  • WCAG type: Success Criteria
The visual presentation of text and images of text has a contrast ratio of at least 7:1, except for the following: Large Text: Large-scale text and images of large-scale text have a contrast ratio of at least 4.5:1; Incidental: Text or images of text that are part of an inactive user interface component, that are pure decoration, that are not visible to anyone, or that are part of a picture that contains significant other visual content, have no contrast requirement. Logotypes: Text that is part of a logo or brand name has no minimum contrast requirement.
  • WCAG type: Success Criteria
For prerecorded audio-only content that (1) contains primarily speech in the foreground, (2) is not an audio CAPTCHA or audio logo, and (3) is not vocalization intended to be primarily musical expression such as singing or rapping, at least one of the following is true: No Background: The audio does not contain background sounds. Turn Off: The background sounds can be turned off. 20 dB: The background sounds are at least 20 decibels lower than the foreground speech content, with the exception of occasional sounds that last for only one or two seconds.
  • WCAG type: Success Criteria
For the visual presentation of blocks of text, a mechanism is available to achieve the following: Foreground and background colors can be selected by the user. Width is no more than 80 characters or glyphs (40 if CJK). Text is not justified (aligned to both the left and the right margins). 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. 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.
  • WCAG type: Success Criteria
Images of text are only used for pure decoration or where a particular presentation of text is essential to the information being conveyed.
  • WCAG type: Success Criteria
Make all functionality available from a keyboard.
  • WCAG type: Guidelines
All functionality of the content is operable through a keyboard interface without requiring specific timings for individual keystrokes, except where the underlying function requires input that depends on the path of the user's movement and not just the endpoints. Note 1: This exception relates to the underlying function, not the input technique. For example, if using handwriting to enter text, the input technique (handwriting) requires path-dependent input but the underlying function (text input) does not. Note 2: This does not forbid and should not discourage providing mouse input or other input methods in addition to keyboard operation.
  • WCAG type: Success Criteria
If keyboard focus can be moved to a component of the page using a keyboard interface, then focus can be moved away from that component using only a keyboard interface, and, if it requires more than unmodified arrow or tab keys or other standard exit methods, the user is advised of the method for moving focus away. Note: Since any content that does not meet this success criterion can interfere with a user's ability to use the whole page, all content on the Web page (whether it is used to meet other success criteria or not) must meet this success criterion. See Conformance Requirement 5: Non-Interference.
  • WCAG type: Success Criteria
All functionality of the content is operable through a keyboard interface without requiring specific timings for individual keystrokes.
  • WCAG type: Success Criteria
Provide users enough time to read and use content.
  • WCAG type: Guidelines
For each time limit that is set by the content, at least one of the following is true: Turn off: The user is allowed to turn off the time limit before encountering it; or Adjust: The user is allowed to adjust the time limit before encountering it over a wide range that is at least ten times the length of the default setting; or Extend: The user is warned before time expires and given at least 20 seconds to extend the time limit with a simple action (for example, "press the space bar"), and the user is allowed to extend the time limit at least ten times; or Real-time Exception: The time limit is a required part of a real-time event (for example, an auction), and no alternative to the time limit is possible; or Essential Exception: The time limit is essential and extending it would invalidate the activity; or 20 Hour Exception: The time limit is longer than 20 hours.
  • WCAG type: Success Criteria
For moving, blinking, scrolling, or auto-updating information, all of the following are true: Moving, blinking, scrolling: For any moving, blinking or scrolling information that (1) starts automatically, (2) lasts more than five seconds, and (3) is presented in parallel with other content, there is a mechanism for the user to pause, stop, or hide it unless the movement, blinking, or scrolling is part of an activity where it is essential; and Auto-updating: For any auto-updating information that (1) starts automatically and (2) is presented in parallel with other content, there is a mechanism for the user to pause, stop, or hide it or to control the frequency of the update unless the auto-updating is part of an activity where it is essential.
  • WCAG type: Success Criteria
Timing is not an essential part of the event or activity presented by the content, except for non-interactive synchronized media and real-time events.
  • WCAG type: Success Criteria
Interruptions can be postponed or suppressed by the user, except interruptions involving an emergency.
  • WCAG type: Success Criteria
When an authenticated session expires, the user can continue the activity without loss of data after re-authenticating.
  • WCAG type: Success Criteria
Do not design content in a way that is known to cause seizures.
  • WCAG type: Guidelines
Web pages do not contain anything that flashes more than three times in any one second period, or the flash is below the general flash and red flash thresholds.
  • WCAG type: Success Criteria
Web pages do not contain anything that flashes more than three times in any one second period.
  • WCAG type: Success Criteria

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