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The SimpleUI has been developed with accessibility in mind. It is WCAG 2.0 AA compliant and has been developed using the WAI-ARIA principles.
Vision Australia conducted an audit in October 2015 and validated that the SimpleUI is WCAG 2.0 AA compliant.
The following outlines the SimpleUI's compliance against relevant WCAG 2.0 requirements.
| Area | # | Guideline | Assessment |
|---|---|---|---|
| Text Alternatives | 1.1 | Provide text alternatives for any non-text content so that it can be changed into other forms people need, such as large print, braille, speech, symbols or simpler language. | |
| Non-text Content (Level A) | 1.1.1 | 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. | Guideline Met |
| Time-based Media | 1.2 | Provide alternatives for time-based media. | Guideline N/A - the SimpleUI does not use time-based media |
| Adaptable | 1.3 | Create content that can be presented in different ways (for example simpler layout) without losing information or structure | |
| Info and Relationships (Level A) | 1.3.1 | Information, structure, and relationships conveyed through presentation can be programmatically determined or are available in text. | Guideline Met |
| Meaningful Sequence (Level A) | 1.3.2 | When the sequence in which content is presented affects its meaning, a correct reading sequence can be programmatically determined. | Guideline Met |
| Sensory Characteristics (Level A) | 1.3.3 | 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. | Guideline Met |
| Distinguishable | 1.4 | Make it easier for users to see and hear content including separating foreground from background. | |
| Use of Color (Level A) | 1.4.1 | Color is not used as the only visual means of conveying information, indicating an action, prompting a response, or distinguishing a visual element. | Guideline Met |
| Audio Control (Level A) | 1.4.2 | If any audio on a Web page plays automatically for more than 3 seconds, either a mechanism is available to pause or stop the audio, or a mechanism is available to control audio volume independently from the overall system volume level. | Guideline N/A - the SimpleUI does not use audio |
| Contrast (Minimum) (Level AA) | 1.4.3 | The visual presentation of text and images of text has a contrast ratio of at least 4.5:1, except for the following:
| Guideline Met |
| Resize text (Level AA) | 1.4.4 | Except for captions and images of text, text can be resized without assistive technology up to 200 percent without loss of content or functionality. | Guideline Met |
| Images of Text (Level AA) | 1.4.5 | If the technologies being used can achieve the visual presentation, text is used to convey information rather than images of textexcept for the following:
Note: Logotypes (text that is part of a logo or brand name) are considered essential. | Guideline Met |
| Contrast (Enhanced) (Level AAA) | 1.4.6 | The visual presentation of text and images of text has a contrast ratio of at least 7:1, except for the following:
| Guideline Not Met |
| Low or No Background Audio (Level AAA) | 1.4.7 | 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: | Guideline N/A - the SimpleUI does not use audio content |
| Visual Presentation (Level AAA) | 1.4.8 | 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. | Guideline Not Met |
| Images of Text (No Exception) (Level AAA) | 1.4.9 | Images of text are only used for pure decoration or where a particular presentation of text is essential to the information being conveyed. | Guideline Met |
| Keyboard Accessible | 2.1 | Make all functionality available from a keyboard. | |
| Keyboard (Level A) | 2.1.1 | 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. | Guideline Met |
| No Keyboard Trap (Level A) | 2.1.2 | 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. | Guideline Met |
| Keyboard (No Exception) (Level AAA) | 2.1.3 | All functionality of the content is operable through a keyboard interface without requiring specific timings for individual keystrokes. | Guideline Met |
| Enough Time | 2.2 | Provide users enough time to read and use content. | |
| Timing Adjustable (Level A) | 2.2.1 | For each time limit that is set by the content, at least one of the following is true:
| Guideline Met |
| Pause, Stop, Hide (Level A) | 2.2.2 | For moving, blinking, scrolling, or auto-updating information, all of the following are true:
| Guideline Met |
| No Timing (Level AAA) | 2.2.3 | Timing is not an essential part of the event or activity presented by the content, except for non-interactive synchronized media andreal-time events. | Guideline Met |
| Interruptions (Level AAA) | 2.2.4 | Interruptions can be postponed or suppressed by the user, except interruptions involving an emergency. | Guideline Met |
| Re-authenticating (Level AAA) | 2.2.5 | When an authenticated session expires, the user can continue the activity without loss of data after re-authenticating. | Guideline Met |
| Seizures | 2.3 | Do not design content in a way that is known to cause seizures. | |
Three Flashes or Below Threshold (Level A) | 2.3.1 | 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. | Guideline Met |
Three Flashes (Level AAA) | 2.3.2 | Web pages do not contain anything that flashes more than three times in any one second period. | Guideline Met |
Navigable | 2.4 | Provide ways to help users navigate, find content, and determine where they are. | |
Bypass Blocks (Level A) | 2.4.1 | A mechanism is available to bypass blocks of content that are repeated on multiple Web pages. | Guideline Met |
Page Titled (Level A) | 2.4.2 | Web pages have titles that describe topic or purpose. | Guideline N/A because the Simple UI does not control the page title |
Focus Order (Level A) | 2.4.3 | If a Web page can be navigated sequentially and the navigation sequences affect meaning or operation, focusable components receive focus in an order that preserves meaning and operability. | Guideline Met |
Link Purpose (In Context) (Level A) | 2.4.4 | 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. | Guideline Met |
Multiple Ways (Level AA) | 2.4.5 | 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. | Guideline N/A - the Simple UI is a step in a process |
Headings and Labels (Level AA) | 2.4.6 | Headings and labels describe topic or purpose. | Guideline Met |
Focus Visible (Level AA) | 2.4.7 | Any keyboard operable user interface has a mode of operation where the keyboard focus indicator is visible. | Guideline Met |
Location (Level AAA) | 2.4.8 | Information about the user's location within a set of Web pages is available. | Guideline Met |
Link Purpose (Link Only) (Level AAA) | 2.4.9 | 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. | Guideline Met |
Section Headings (Level AAA) | 2.4.10 | Section headings are used to organize the content. | Guideline Met |
Readable | 3.1 | Make text content readable and understandable. | |
Language of Page (Level A) | 3.1.1 | The default human language of each Web page can be programmatically determined. | Guideline N/A as the Simple UI is injected into an existing page and does not control this |
Language of Parts (Level AA) | 3.1.2 | 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. | Guideline N/A as the Simple UI is injected into an existing page and does not control the original page language, so changes to language cannot be identified by the SimpleUI |
Unusual Words (Level AAA) | 3.1.3 | A mechanism is available for identifying specific definitions of words or phrases used in an unusual or restricted way, including idioms and jargon. | Guideline N/A - the SimpleUI does not use unusual words or phrases |
Abbreviations (Level AAA) | 3.1.4 | A mechanism for identifying the expanded form or meaning of abbreviations is available. | Guideline N/A - the SimpleUI does not use abbreviations apart from "ID", which is widely understood. |
Reading Level | 3.1.5 | 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) | Guideline N/A - the SimpleUI does not use text that requires an advanced reading level. |
Pronunciation (Level AAA) | 3.1.6 | A mechanism is available for identifying specific pronunciation of words where meaning of the words, in context, is ambiguous without knowing the pronunciation. | Guideline N/A - the SimpleUI does not use words that require pronunciation to be understood in order to understand the meaning. |
Predictable | 3.2 | Make Web pages appear and operate in predictable ways. | |
On Focus (Level A) | 3.2.1 | When any component receives focus, it does not initiate a change of context. | Guideline Met |
On Input (Level A) | 3.2.2 | Changing the setting of any user interface component does not automatically cause a change of context unless the user has been advised of the behavior before using the component. | Guideline Met |
Consistent Navigation (Level AA) | 3.2.3 | 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. | Guideline Met |
Consistent Identification (Level AA) | 3.2.4 | Components that have the same functionality within a set of Web pages are identified consistently. | Guideline Met |
Change on Request (Level AAA) | 3.2.5 | Changes of context are initiated only by user request or a mechanism is available to turn off such changes. | Guideline partially met for links that open in new tabs, such as help modal text links. They have a “target” attribute but do not specifically state the behaviour in the on-screen link text. |
Input Assistance | 3.3 | Help users avoid and correct mistakes. | |
Error Identification (Level A) | 3.3.1 | If an input error is automatically detected, the item that is in error is identified and the error is described to the user in text. | Guideline Met |
Labels or Instructions (Level A) | 3.3.2 | Labels or instructions are provided when content requires user input. | Guideline Met |
Error Suggestion (Level AA) | 3.3.3 | If an input error is automatically detected and suggestions for correction are known, then the suggestions are provided to the user, unless it would jeopardize the security or purpose of the content. | Guideline Met |
Error Prevention (Legal, Financial, Data) (Level AA) | 3.3.4 | For Web pages that cause legal commitments or financial transactions for the user to occur, that modify or delete user-controllable data in data storage systems, or that submit user test responses, at least one of the following is true: 1. Reversible: Submissions are reversible.
2. Checked: Data entered by the user is checked for input errors and the user is provided an opportunity to correct them.
3. Confirmed: A mechanism is available for reviewing, confirming, and correcting information before finalizing the submission.
| Guideline N/A - the SimpleUI does not cause legal commitments or financial transactions |
Help (Level AAA) | 3.3.5 | Context-sensitive help is available. | Guideline Met |
Error Prevention (All) (Level AAA) | 3.3.6 | For Web pages that require the user to submit information, at least one of the following is true: 1. Reversible: Submissions are reversible.
2. Checked: Data entered by the user is checked for input errors and the user is provided an opportunity to correct them.
3. Confirmed: A mechanism is available for reviewing, confirming, and correcting information before finalizing the submission.
| Guideline Met |
Compatible | 4.1 | Maximize compatibility with current and future user agents, including assistive technologies. | |
Parsing (Level A) | 4.1.1 | In content implemented using markup languages, elements have complete start and end tags, elements are nested according to their specifications, elements do not contain duplicate attributes, and any IDs are unique, except where the specifications allow these features. | Guideline Met |
Name, Role, Value (Level A) | 4.1.2 | For all user interface components (including but not limited to: form elements, links and components generated by scripts), the nameand role can be programmatically determined; states, properties, and values that can be set by the user can be programmatically set; and notification of changes to these items is available to user agents, including assistive technologies. | Guideline Met |