Accessibility at the Edge Community Group

Accessibility at the Edge Community Group
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Accessibility at the Edge Comm...
Accessibility at the Edge Community Group
The mission of the Accessibility at the Edge Community Group is to examine improvements to internet accessibility via "edge computing", a relatively new paradigm that focuses on performing tasks at the edge of the network. Unlike cloud computing, edge computing emphasizes activities that occur closer to the user; these could include accessibility oriented user-agent extensions, applications on content delivery networks, JavaScript-enabled capabilities, AI or ML. The group is a forum for discussing both currently available products, potentially new applications not yet commercially available, as well as objective measures of the quality of any one of these. Our tasks can include inventorying both opportunities and challenges, drafting and incubating Internet specifications for further assessment, standardization, prototyping and testing of reference implementations. A11Y-EDGE CG meetings work and operate under the
W3C Code of Conduct
a11yedge/
Group's public email, repo and wiki activity over time
Note: Community Groups are proposed and run by the community. Although W3C hosts these
conversations, the groups do not necessarily represent the views of the W3C Membership or staff.
Drafts /
licensing info
Date
Name
2023-04-18
Overlay Capabilities Inventory
2022-09-06
Overlay Applications in Web Accessibility
Chairs, when logged in, may publish draft and final reports. Please see
report requirements
W3C Accessibility at the Edge Community Group Report is Published
Janina Sajka
Posted on:
November 9, 2025
Accessibility Capabilities: Post-Source Code and Content
The
W3C Accessibility at the Edge Community Group
announces publication of its Final Report addressing the trade-offs and benefits of
applying dynamic accessibility remediations to web content
. Today’s typical web page is a complex blend of multiple original sources, yielding experiences that work well for some users but fail for others, leaving many websites and online applications inaccessible to people with disabilities. In development since
Fall 2022
, the report titled:
Accessibility Capabilities: Post-Source Code and Content
features cross-references to
WCAG
throughout, because WCAG remains the valid yardstick whether applied in-source or post-source.
Comments are welcome in the github,
a11yedge/capabilities
or by sending an email to the list,
public-a11yedge@w3.org
A special thanks to the
W3C Information Architecture Community Group
for their assistance.
U.S. Attorney-General on Overlays: Cites Community Group Work
Janina Sajka
Posted on:
December 6, 2024
U.S. Attorney-General Addresses Accessibility Overlays in Ruling
The U.S. Department of Justice (DOJ) addressed accessibility overlays, as nearly a dozen commentors had requested, in its recently released ADA Title II regulatory ruling. In its response DOJ cited this community group’s work on post-source and related edge technologies. This acknowledgment of our published definitions and comparative analysis highlights the continuing and pivotal role that the World Wide Web Consortium (
W3C
) can play.
DOJ expressly states it takes no position on specific technologies. Rather they express a concern for accessible results regardless of the technologies employed. This mirrors our approach in
our Capabilities document where we dispassionately review the implications of accessibility solutions throughout the web stack feature by feature. To paraphrase, the DOJ acknowledges it’s the results that matter, not the technologies used to achieve the results. This is important because the DOJ regulations are the law in the U.S. and tend to influence global opinion such as
EU standards
W3C Community Group’s Report Cited in Title II ADA Regulation
The DOJ solicited comments prior to its ruling, and received nearly a dozen comments, pointing to a dozen web pages and other references, on topics that overlap with our concerns. The final ruling cites only this report.
To read the Attorney-General’s announcement go here:
www.justice.gov/opa/pr/justice-department-publish-final-rule-strengthen-web-and-mobile-app-acces+s-people
. For the actual ruling, open the
Federal Register document and look for the section on Overlays
You’ll find our
Community Group draft Capabilities document
expressly referenced in footnote #369. In the Federal Register it is footnote 263. The footnote reads, “See W3C, Overlay Capabilities Inventory: Draft Community Group Report (Feb. 12, 2024),
/ [
].
We thank our corporate members and individual contributors
as captured in our document. If you’re not active with us–it’s not too late to
join
Here’s to continued success and innovation in providing more options towards making the digital world accessible to all!
New Teleconference Time
Janina Sajka
Posted on:
March 1, 2024
To better support new participants we have rescheduled our weekly teleconference to Wednesdays at 2:30 PM Boston time.
If this time suits your schedule better, we look forward to having you join the discussion.
Annual Review Meeting at this TPAC, You’re Invited
Janina Sajka
Posted on:
September 6, 2023
Our community group will once again participate in W3C’s annual week-long technical gathering, better known as TPAC. We will host an introduction to our working document, “Capabilities Inventory,” discuss future directions for the document and how it can serve for useful guidance in the industry.
The document is already receiving attention and discussion online, such as in the web-a11y.slack.com community. It is also scheduled for discussion on the Accessibility Platform Architectures Working Group agenda, with the goal of better informing W3C’s specifications and guidance.
That’s why broad conversation in our breakout will give us a more realistic exposition of the problems and opportunities. Meeting details:
13 September 2023, 09:30–10:30 Central European Summer Time
Participation is free, and does not require attending any other TPAC meetings.
Annual Review: Community Group’s Work on Accessibility in Overlay Technology
Agenda:
Year-in-Review
: Our Achievements
Deep Dive
: Guided Reading of the Capabilities Draft Report
Getting on the Same Page
: Terminology Discussion
Looking Forward
: Next Steps
Details:
Year-in-Review
We’ll discuss the major milestones and progress we’ve made in the past year.
Deep Dive
Highlighting Key Capabilities
: Understand the capabilities present in COTS (commercial off the shelf) products. These are essential in evaluating and contrasting current technologies.
Future Potential
: We’ll discuss aspirational capabilities that hold promise for advancing accessibility, especially when implemented as edge technology.
Getting on the Same Page
Let’s dive deep into the vocabulary we’ve come across. We’ll carefully explore terms like “
overlay
“, “
user agent
“, “
assistive technology
“, “
browser extensions
“, and other edge-located add-ons to ensure a shared understanding.
Link to the Capabilities Draft Report
Looking forward to an insightful session. See you there!
Road Testing Capabilities at the NFB Convention
Janina Sajka
Posted on:
July 14, 2023
Opening Toward Constructive Face to Face Engagement
Oversimplified discussions about
overlays
has been an unfortunate tendency in recent years. Painting them as a one-size-fits-all solution that doesn’t acknowledge
disparate individual accessibility needs
has tended to subvert constructive discussion impeding progress to real benefits for real users.
The just concluded
NFB convention in Houston
gave us the opportunity to challenge this narrative with facts and nuanced descriptions of user requirements in direct, face to face communication with one critical community of web users who’ve been justifiably frustrated by far too much negative experience of overlays over these same recent years.
Lionel Wolberger
from our Community Group brought braille copies of our complete current Capabilities draft, along with a brailled executive summary, to the NFB. At a booth in the exhibit area and in
two scheduled listening sessions
he unveiled our
early draft of Capabilities
to a select group of blind leaders and technology professionals, along with a convention hall of ordinary users who, up to this point, were admittedly skeptical of the concept of overlays proved to be a highlight of the convention week.
We were able to introduce attendees to the intricate nuances of overlays, and particularly how our
Community Group
focuses on enhancing “
accessibility at the edge
” in support of multiple accessibility scenarios and not just screen reader users. We had the opportunity to share our vision of providing
solutions as close to the user as possible, maximizing customization opportunities, and minimizing friction for the individual user. We were able to demonstrate our goal of
W3C-level precision
regarding what functions exactly we are talking about and how these can be harnessed to provide ever more accessible user support regardless the device a user is using at any moment.
We extend our gratitude to the NFB and all the convention participants for their respectful engagement and valuable feedback. We were able to agree that open dialogue, constructive criticism, and collaborative problem-solving, can indeed allow us to work together towards a digital landscape that truly includes everyone so completely that no user will really care how it’s accomplished.
We are also grateful for the
W3C Community Group process
for providing a safe setting for developing this work. For more updates on
Accessibility at the Edge
, the
Overlay Capabilities report
and our other initiatives, stay tuned. We are just getting started.
Interest In Our Work is Growing
Janina Sajka
Posted on:
May 18, 2023
More people are bringing more diverse viewpoints into our Monday Teleconference conversations, all of which are being reflected in our document,
Overlay Capabilities
We believe that one of our two major sections,
Meeting User’s Needs
, is near completion. We feel we gathered all the relevant facts and are now editing that section primarily for clarity. Meanwhile, we’re focusing on the other major section of this report,
Meeting Content Provider’s Needs
. In this age of mashup content it’s very important to understand the impact on accessibility of content gathered by from multiple sources and assembled, perhaps by the Content Delivery Network (CDN), for delivery to the end user. All the facts for this section aren’t quite yet in the document, but getting them properly described is our current focus.
We continue to develop diagrams to express the mutual relationship of the website source and the various edge technologies that create today’s typical end-user’s experience. The architecture is meant to embrace accessibility overlays as well as edge technologies in the planning stages, such as a reporting URL for reporting accessibility failures. The draft diagram below shows the cloud, user and edge labelled according to vocabulary we are curating together in the community group. A cloud at top is labeled “Content Provider”, a rectangle at bottom is labeled “User”, and a cloud on the left, roughly between the two, labeled “Edge Service Provider”. An arrow points from the Content Provider to the User which merges with an arrow pointing from the Edge Service Provider, to the User, whose device integrates and renders the result.
Please know, it’s not too late to join the discussion! Mondays at 1 PM Boston time. You can see the calendar here, and click to
join the community group
As always, your comments and contributions will help us get all relevant facts captured and properly presented!
Overlay Capabilities: Major Update
Janina Sajka
Posted on:
April 18, 2023
We’re pleased to announce a major update of our draft report on
Overlay Capabilities
Where previously these were simply a list of over 46 and prospective applications of overlays in support of accessibility, they’re now organized under two primary categories with several subcategories under each primary section. The primary categories are:
Capabilities the end user can (or should) be able to control fully.
Capabilities which are controlled by the content provider even though they can profoundly affect the accessibility experience.
As before we continue to add capabilities based on your feedback and discussion during our weekly teleconference meetings. And, as before we continue editing our analysis of each overlay capability from three viewpoints:
Implications of locating the capability in the content provider’s web source;
Trade-offs to be considered between locating the capability in source content vs. at the edge;
Benefits that can be realized by locating the capability at the edge.
Our last teleconference discussed adding graphical content to our documents. Here’s an image we found that illustrates how we think of the edge quite well. It illustrates
Samsung’s Dictionary
entry on Edge Computing, below:
Figure 1: A high level view of edge computing architecture.Note that the edge computing platform is nearest to the end user. Source,
Samsung Dictionary
We expect to do similar graphics moving forward.
Progress Report: 46 Overlay Capabilities
Janina Sajka
Posted on:
March 2, 2023
We are working our way through forty-six explicit capabilities that are often facilitated by overlays. This is not a fixed number, it could be expanded or contracted as people contribute more.
We’re examining these overlay facts from three essential viewpoints. These viewpoints include the upstream source. They also include several edge technologies such as Javascript embedded in the page, content delivery networks, and user-agent-based technologies.
Track our progress in the overlay GitHub,
capabilities.html
–look at the latest branch, as we may not have merged yet–and feel free to file
GitHub issues
Next meeting is this
Monday 6 March 2023
at 1 PM Boston.
Progress Update
Janina Sajka
Posted on:
January 20, 2023
We are now meeting regularly on Mondays. See the
calendar
and join us!
What We’re Doing
We are working through a dispassionate and technical evaluation of overlay facts, capturing a list of things that overlays do (or claim to do). Examples include:
User-triggered interaction/opt-in
Runs automatically, no user action needed
Portable cross-site profile expressing accessibility-oriented preferences
Automated detection of WCAG violations
Automated remediation of WCAG violations
… and so on.
You can
follow our progress here (Google Sheets)
How we are working on it:
Feel free to supply your own list of what overlays do, or claim to do, especially if you have additional functions that are not on our current list. You can submit a document to me (email to janina.sajka at gmail) or this community list,
public-a11yedge@w3.org
and come join our discussions.
A11y-edge Community group, gathering and evaluating overlay facts and capabilities.
– Janina Sajka, Chair
December 5 Meeting
Janina Sajka
Posted on:
December 1, 2022
Please find below the agenda for our upcoming weekly teleconference for the Accessibility at the Edge Community Group. We are keeping the agenda of the last meeting, which is:
Welcome
Review of key W3C procedures and expectations (Include
CEPC
and
IRC
Introductions asking:
a.) Brief bio
b.) Indicate whether you’d like to vent!
c.) Short term goals for your participation
d.) Long term goals
Reminder of next meeting time
Zoom coordinates, meeting ID: 84665535534
Meeting passcode is four numerals, which are two, one, one, and finally the numeral nine.
In parallel to the Zoom meeting, we chat on IRC, channel #a11yedge. The IRC can be accessed in your browser at this link,
. Just enter your name and #a11yedge for the channel.
Any questions, please direct message me by email and I’ll be happy to reply.
– Janina
The Accessibility at the Edge Community Group’s mission is to examine improvements to internet accessibility via “edge computing”, a relatively new paradigm that focuses on performing tasks at the edge of the network. We plan to cover all relevant topics including overlays and prospective applications not yet implemented anywhere. A11Y-EDGE CG meetings work and operate under the W3C Code of Ethics and Professional Conduct
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