Comparison: WDAR – WCAG 2.0 with WDAR as Basis

1.1.1 Non-text Content: All non-text content that is presented to the user has a text alternative that serves the equivalent purpose, except for the situations listed below.:

• Controls, Input: If non-text content is a control or accepts user input, then it has a namethat describes its purpose.

• Time-Based Media: If non-text content is time-based media, then text alternatives at least provide descriptive identification of the non-text content.

• Test: If non-text content is a test or exercise that would be invalid if presented in text, then text alternatives at least provide descriptive identification of the non-text content.

• Sensory: If non-text content is primarily intended to create a specific sensory experience, then text alternatives at least provide descriptive identification of the non-text content.

• CAPTCHA: If the purpose of non-text content is to confirm that content is being accessed by a person rather than a computer, then text alternatives that identify and describe the purpose of the non-text content are provided, and alternative forms of CAPTCHA using output modes for different types of sensory perception are provided to accommodate different disabilities.

• Decoration, Formatting, Invisible: If non-text content is pure decoration, is used only for visual formatting, or is not presented to users, then it is implemented in a way that it can be ignored by assistive technology.

Guideline 1.4.9 Images of Text (No Exception): Images of text are only used for pure decoration or where a particular presentation of text is essential to the information being conveyed. (Level AAA)

Guideline 1.4.9 Images of Text (No Exception): Images of text are only used for pure decoration or where a particular presentation of text is essential to the information being conveyed. (Level AAA)

Guideline 2.1.1 Keyboard: 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. (Level A)

Guideline 2.4.4 Link Purpose (In Context):The purpose of each link can be determined from the link text alone or from the link text together with its programmatically determined link context, except where the purpose of the link would be ambiguous to users in general. (Level A)

Additional Notes:

• For some types of non-text content, it may be necessary to provide a conforming alternate version. Refer to conformance requirement 1 and conformance requirement 4 for more information.
• Images used as bullets are also covered in Guideline 1.3 with regard to CSS usage.
• For framesets, noframes is no longer required.
• For multimedia, alternatives (beyond labels) are covered under Guideline 1.2.
• ASCII art is non-text content.

Additional Notes:

• This checkpoint partially maps to Success Criterion 2.4.2 (Level A).

Guideline 1.1.1 Non-text Content: All non-text content that is presented to the user has a text alternative that serves the equivalent purpose, except for the situations listed below.:

• Controls, Input: If non-text content is a control or accepts user input, then it has a namethat describes its purpose.

• Time-Based Media: If non-text content is time-based media, then text alternatives at least provide descriptive identification of the non-text content.

• Test: If non-text content is a test or exercise that would be invalid if presented in text, then text alternatives at least provide descriptive identification of the non-text content.

• Sensory: If non-text content is primarily intended to create a specific sensory experience, then text alternatives at least provide descriptive identification of the non-text content.

• CAPTCHA: If the purpose of non-text content is to confirm that content is being accessed by a person rather than a computer, then text alternatives that identify and describe the purpose of the non-text content are provided, and alternative forms of CAPTCHA using output modes for different types of sensory perception are provided to accommodate different disabilities.

• Decoration, Formatting, Invisible: If non-text content is pure decoration, is used only for visual formatting, or is not presented to users, then it is implemented in a way that it can be ignored by assistive technology.

Guideline 1.4.5 Images of Text: 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: (Level AA)

• Customizable: The image of text can be visually customized to the user’s requirements;

• Essential: A particular presentation of text is essential to the information being conveyed.

Guideline 2.4.5 Multiple Ways: More than one way is available to locate a Web page within a set of Web pages except where the Web Page is the result of, or a step in, a process. (Level AA)

Guideline 3.3.5 Help: Context-sensitive help is available. (Level AAA)

Additional Notes:

• In WCAG 2.0, this requirement applies only to groups that are repeated on multiple delivery units.

Guideline 2.4.9 Link Purpose (Link Only):A mechanism is available to allow the purpose of each link to be identified from link text alone, except where the purpose of the link would be ambiguous to users in general. (Level AAA)

Guideline 3.1.1 Language of Page: The default human language of each Web page can be programmatically determined. (Level A)

Guideline 3.1.2 Language of Parts: The human language of each passage or phrase in the content can be programmatically determined except for proper names, technical terms, words of indeterminate language, and words or phrases that have become part of the vernacular of the immediately surrounding text. (Level AA)

Guideline 3.1.5 Reading Level: When text requires reading ability more advanced than the lower secondary education level after removal of proper names and titles, supplemental content, or a version that does not require reading ability more advanced than the lower secondary education level, is available. (Level AAA)

2.2.2 Pause, Stop, Hide: For moving, blinking, scrolling, or auto-updating information, all of the following are true: (Level A)

• 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.

User agents now support explicit associations of labels with form controls, so the "until user agents" clause has been satisfied. This is therefore no longer a requirement under WCAG 2.0.

"Positioning labels to maximize predictability of relationships (future link)" is listed as an advisory technique for Success Criterion 1.3.1 (Level A).

Guideline 2.4.4 Link Purpose (In Context):The purpose of each link can be determined from the link text alone or from the link text together with its programmatically determined link context, except where the purpose of the link would be ambiguous to users in general. (Level A)

Guideline 2.4.6 Headings and Labels:Headings and labels describe topic or purpose. (Level AA)

Guideline 2.4.9 Link Purpose (Link Only):A mechanism is available to allow the purpose of each link to be identified from link text alone, except where the purpose of the link would be ambiguous to users in general. (Level AAA)

Guideline 3.3.2 Labels or Instructions: Labels or instructions are provided when content requires user input. (Level A)

Specifically:

• H44: Using label elements to associate text labels with form controls

This "until user agents" condition has been met. Therefore, this checkpoint is no longer required.

Guideline 1.4.4 Resize text: Except for captions and images of text, text can be resized without assistive technology up to 200 percent without loss of content or functionality. (Level AA)

Guideline 1.4.5 Images of Text: 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: (Level AA)

• Customizable: The image of text can be visually customized to the user’s requirements;

• Essential: A particular presentation of text is essential to the information being conveyed.

Guideline 1.4.6 Contrast (Enhanced): The visual presentation of text and images of text has a contrast ratio of at least 7:1, except for the following: (Level AAA)

• Large Text: Large-scale text and images of large-scale text have a contrast ratio of at least4.5:1;

• 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.

Guideline 1.4.8 Visual Presentation: For the visual presentation of blocks of text, a mechanism is available to achieve the following: (Level AAA)

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.

Guideline 2.4.5 Multiple Ways: More than one way is available to locate a Web page within a set of Web pages except where the Web Page is the result of, or a step in, a process. (Level AA)

Guideline 3.3.5 Help: Context-sensitive help is available. (Level AAA)

This checkpoint does not directly map to any WCAG 2.0 Success Criterion and is not required. Some aspects relate to Success Criterion 2.4.2 (Level AA), Success Criterion 2.4.5 (Level AA), Success Criterion 3.3.3 (Level AA), and Success Criterion 3.3.5 (Level AAA).

3.2.3 Consistent Navigation: Navigational mechanisms that are repeated on multiple Web pages within a set of Web pages occur in the same relative order each time they are repeated, unless a change is initiated by the user. (Level AA)

Guideline 1.4.1 Use of Color: Color is not used as the only visual means of conveying information, indicating an action, prompting a response, or distinguishing a visual element. (Level A)

Guideline 1.3.3 Sensory Characteristics: Instructions provided for understanding and operating content do not rely solely on sensory characteristics of components such as shape, size, visual location, orientation, or sound. (Level A)

Guideline 1.3.1 Info and Relationships: Information, structure, and relationships conveyed through presentation can be programmatically determined or are available in text. (Level A)

Guideline 3.2.4 Consistent Identification: Components that have the same functionality within a set of Web pages are identified consistently. (Level AA)

Guideline 1.4.3 Contrast (Minimum): The visual presentation of text and images of text has a contrast ratio of at least 4.5:1, except for the following: (Level AA)

• 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.

Guideline 1.4.6 Contrast (Enhanced): The visual presentation of text and images of text has a contrast ratio of at least 7:1, except for the following: (Level AAA)

• Large Text: Large-scale text and images of large-scale text have a contrast ratio of at least4.5:1;

• 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.

1.4.7 Low or No Background Audio: 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: (Level AAA)

• 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.
  Note: Per the definition of “decibel,” background sound that meets this requirement will be approximately four times quieter than the foreground speech content.