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This is a draft of a plan to target WCAG 2.0 Level AA in uPortal that we hope to complete, discuss, and ratify in the community. Following that, we plan to convert this document to Markdown and commit it to the main uPortal repo in Github. |
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The four principles
The overall goal for accessibility is to create web content that is perceivable, operable and understandable by the broadest possible range of users and compatible with their wide range of assistive technologies, now and in the future. The basic principles include:
Perceivable
Information and user interface elements must be presentable to users in ways they can perceive. This means that users must be able to perceive the information being presented. I cannot be invisible to all of their senses.
Operable
User interface elements and navigation must be operable. The user interface cannot require an action that a user cannto perform.
Understandable
Information and the operation of the user interface must be understandable. That means the user must be able to understand the information as well as the operation of the user interace. The content cannot be beyond their understanding.
Robust
Web content must be robust enough that it can be interpreted reliably by a wide variety of user agents, including assistive technologies (AT). This means that users must be able to access web content as technologies advance. Software updates to user agents and AT should not matter when it comes to web content and accessibility.
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- chrome extension: https://chrome.google.com/webstore/detail/accessibility-developer-t/fpkknkljclfencbdbgkenhalefipecmb
- chrome extension code: https://github.com/GoogleChrome/accessibility-developer-tools
HTML Code Sniffer / Pally
- HTML_CodeSniffer is a client-side script that checks HTML source code and detects violations of a defined coding standard. HTML_CodeSniffer is written entirely in JavaScript, does not require any server-side processing and can be extended by developers to enforce custom coding standards by creating your own "sniffs".
- website / bookmarklet: http://squizlabs.github.io/HTML_CodeSniffer/
- source: https://github.com/squizlabs/HTML_CodeSniffer
- Pally - your automated accessibility testing pal. It runs HTML CodeSniffer for programmatic accessibility reporting.
- website: http://pa11y.org/
- Dashboard: Web interface for automated accessibility reporting and graphing. https://github.com/nature/pa11y-dashboard
web service: A simple JSON web service for automated accessibility reporting. https://github.com/nature/pa11y-webservice
command line: Run one-off accessibility reports from the comfort of your command line. https://github.com/nature/pa11y
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