For all non-textual content presented to users, textual substitutions are provided that serve equivalent purposes.
Consideration about media containing only recorded sounds and media containing only recorded images.
Captions are provided for all recorded audio content included in synchronized media (e.g. video with audio).
Alternative content or audio commentary on time-dependent media is provided for recorded video content included in synchronized media.
Captions are provided for all the live audio contents included in the synchronized media.
Audio commentary is provided for all recorded video contents included in synchronized media.
Sign language interpreters are provided for all recorded sound contents included in synchronized media.
When the interval between foreground sounds is insufficient to convey the meaning of video in audio commentary, extended audio commentary is provided for all recorded video contents included in synchronized media.
Alternative content for time-based media is provided for all prerecorded synchronized media and prerecorded video-only media.
Alternative content of time-based media that presents equivalent information to content that only includes live audio is provided.
The information, structures, and relationships presented in some way are programmatically interpretable or provided in text.
If the order in which the content is presented affects the meaning, the correct reading order can be interpreted by the program.
The explanation for understanding and manipulating content does not rely solely on the sensory features of the constituent, such as shape, size, visual location, orientation, or sound.
Color is not the only visual means for conveying information, indicating motion, stimulating reactions or discriminating visual elements.
Uses a mechanism that pauses or stops the sound when the sound on the web page is automatically reproduced and lasts longer than 3 seconds or a mechanism that can adjust the volume level without affecting the volume level of the entire system it can.
There is a contrast ratio of at least 4.5: 1 for visual presentation of text and character images.
With the exception of captions and character images, the text can be resized up to 200% without assistive technology without compromising the content or function.
When the intended visual presentation is possible with the technology being used, text, not a text image, is used for information transmission.
For visual presentation of text and character images, there is a contrast ratio of at least 7: 1.
Content that contains only recorded sounds, (1) mainly includes utterances in the foreground, (2) not speech CAPTCHA or voice logo, and (3) mainly music expressions such as songs and laps There is consideration for things that are not intended utterances.
There is consideration in visual presentation of text blocks.
Text images are used for pure decoration or when the specific representation of the text is essential for the information to be conveyed (logotype etc.).
All functions of the content can be operated through the keyboard interface without requiring specific timing for individual keystrokes. However, except when the fundamental function is realized depending on a series of trajectories continuing from the start point to the end point by the action of the user.
If the keyboard interface can be used to move the keyboard focus to a component of the webpage, it is possible to remove focus from that component using only the keyboard interface. Furthermore, if you can not remove focus by using arrow keys without a modifier key, Tab key, or other standard method of removing focus, the user is notified of the method of removing focus.
All functions of the content can be operated through the keyboard interface without requiring specific timing for individual keystrokes.
There is consideration when setting time limit for content.
There is consideration for moving, blinking, scrolling, or automatically updating information.
Timing is not an integral part of the event or action presented by the content. However, excluding non-interactive synchronized media and real-time events.
Interruption can be postponed or suppressed by the user. However, interrupts requiring urgency are excluded.
If the authenticated session expires, the user can continue the operation without losing data even after re-authentication.
The webpage has no flashing more than three times in any one second, or the flash is below the general flash threshold and the red flash threshold.
Web pages do not contain anything that flashes more than three times in any one second period.
A mechanism to bypass blocks of content that is repeated on multiple web pages can be used.
The web page has a title explaining the subject or purpose.
If the web page can navigate in sequence and its navigation order affects meaning or operation, the focusable component receives focus in an order that does not impair meaning and operability.
The purpose of each link can be determined from the text of the link alone, or from the text of the link and the context of the program which can be interpreted programmatically. However, excluding cases where the purpose of the link is ambiguous to most users.
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.
The headings and labels explain the theme or purpose.
Every user interface capable of operating the keyboard has an operation mode in which the focus indicator can be seen.
Information on the position of the user in the set of web pages can be used.
A mechanism that can specify the purpose of each link with the text of the link alone can be used. However, excluding cases where the purpose of the link is ambiguous to most users.
Content is organized using section headings.
Interpretation by program can be made as to which language the default natural language of each web page is.
Interpretation by program can be made as to which language the natural language of each phrase or phrase is. However, exclude proper nouns, technical terms, phrases whose languages are unknown, and words or phrases that are part of the language of the immediately preceding and succeeding texts.
Mechanisms can be used to identify clear definitions of words or phrases used in uncommon or limited usage, including idioms and terminology.
Mechanisms can be used to identify the original word or meaning of the abbreviation.
If the text requires reading comprehension level beyond the former secondary education level with the proper noun or title removed, a version that does not require comprehension content or reading comprehension level beyond the level of the former secondary education can be used.
In the context, if the meaning of a word becomes ambiguous if pronunciation is unknown, a mechanism to specify clear pronunciation of the word can be used.
Neither component causes a change in context when it receives focus.
Changing the setting of the user interface component does not automatically cause a context change. However, unless the user informs the behavior before using it.
The repeated navigation mechanism on multiple webpages in a set of webpages appears in the same order as they are repeated. However, except when the user changes.
Components having the same function in a set of web pages can be consistently identified.
A change in context only occurs at the request of the user, or a mechanism for stopping such change is available.
If an input error is detected automatically, the error location is identified and the error is explained in text to the user.
When content requests input from the user, a label or explanatory text is provided.
If an input error is detected automatically and you can suggest a correction method, that suggestion is presented to the user. However, excluding cases where the purpose of security or content is impaired.
On a web page where a legal act or a financial transaction occurs for a user, the data on the user-controllable data storage system is changed or deleted, or the user sends an exam answer, either cancellation, check or confirmation It is made to be able to do.
You can use context-sensitive help.
On a web page requesting the user to transmit information, it is made possible to cancel, check, or confirm.
In the content implemented using the markup language, the element has a complete start tag and end tag, the elements are nested according to the specification, the element does not have duplicate attributes, any ID Is also unique. However, excluding those approved by the specification.
For all user interface components (elements that make up the form, links, script-generated components, etc.), names and roles can be interpreted programmatically. In addition, the status, properties, and values that can be set by the user can be set by the program. Then, user agents including assistive technology can use change notifications for these items.