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Adrian Roselli
Computer Vision Neural Network Intelligent Agent VRML

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Don’t Rely on YouTube Transcripts

Let’s establish something first — auto-generated captions are a problem. They almost guarantee a WCAG failure and can leave users more confused (or offended) than when they started. YouTube creates the transcript from the closed captions of a video (the text that overlays the video, as opposed to burned-in or…

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Tags: accessibility, video, WCAG

Under-Engineered Responsive Tables

I have written a bunch about responsive tables. Maybe too much. I keep trying to give developers the information they need to make informed decisions — ARIA attributes, screen reader & browser pairing results, bugs, and so on. I have spread things out over years of posts. I have filed…

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Tags: accessibility, html, pattern, standards, tables, WCAG

a11yTO Conf: CSS Display Properties versus HTML Semantics

Update In early July 2022 I re-tested these to see how the results shaped up after nearly two years and at least one promise: It’s Mid-2022 and Browsers (Mostly Safari) Still Break Accessibility via Display Properties If the title is not clear, one browser stands out in failing to address…

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Tags: accessibility, browser, css, html, slides

Alternative Text for CSS Generated Content

As of December 2024, you should prefer using <img> for icons and the like, but for non-interactive decorative contexts that don’t need auto-translation, then alternative text on CSS generated content can get the job done. Even if Safari does some interesting things with it. Relying on images that come from…

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Tags: accessibility, browser, css, standards, usability, UX

Dialog Focus in Screen Readers

Creating an accessible dialog on the web is trickier than it should be. Lack of support for the <dialog> element, the need for fundraisers to get inert into WebKit, inconsistent support for the ARIA dialog role, and other annoyances make them problematic. Scott O’Hara has spent a few years covering…

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Tags: accessibility, browser, html, usability, UX

Gutenberg Accessibility Costs WordPress the W3C Work

This is a slightly extended version of my Twitter thread. As the W3C has embarked on a full web property rebuild, its vendor (Studio24) indirectly announced earlier this month that it had dropped WordPress from consideration as a CMS. WPTavern took issue with this yesterday, and Studio24 responded today, (politely)…

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Tags: accessibility, standards, W3C, WordPress

VoiceOver on iOS 14 Supports Description Lists

3 January 2025: This post is out of date. Read my post Updated Brief Note on Description List Support for the most recent results of testing. The <dl> has existed since HTML+, or 1993, when it was called definition list. VoiceOver on iOS has existed since 2009, when it was…

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Tags: Apple, browser, html, Safari, standards

Source Order Viewer in Edge 86

Update, 15 September 2020: Microsoft put together a more formal announcement at Introducing Source Order Viewer in the Microsoft Edge DevTools. It has some video examples and instructions to enable it. Edge 86 has introduced a feature that shows the source order of a page. You can read more about…

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Tags: accessibility, browser, css, Edge

Sortable Table Column Mad Libs

Visually and functionally sortable column headers on tables are straightforward (I have a post on that coming soon). However, making them accessible can be a bit frustrating. To clarify, making them accessible to screen readers is frustrating. I wrote the post I promised in the opening: Sortable Table Columns There…

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Tags: accessibility, ARIA, html, pattern, standards, tables, usability, UX

WCAG 2.1 Is the Current Standard, Not WCAG 2.0 — and WCAG 2.2 Is Coming

The title kind of says it all. WCAG 2.1 has been the standard for over two years — it was published in June 2018. If you rewind to when the Accessibility Guidelines Working Group (AGWG) was asking for feedback on its near-final 2.1 draft, many of the Success Criteria in…

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Tags: accessibility, rant, WCAG

Speech Viewer Logs of Lies

The headline is intentional hyperbole, chosen mostly for the sloppy alliteration. When sighted users test with a screen reader it is common to rely on the visual output — checking to see where focus goes, confirming that controls behave, watching the spoken output in a text log. The problem is…

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Tags: accessibility, usability, UX

Be Wary of doc-subtitle

In early March, Steve Faulkner shared this nugget for making sub-headings: 👉If you want to semantically identify a heading subtitle, look no further than role="doc-subtitle" w3.org/TR/dpub-aria-1.0/#doc-subtitle #HTML #ARIA #WebDev pic.twitter.com/uaHcVRp6oz Steve Faulkner (@stevefaulkner) March 7, 2020 On its surface it looks pretty handy. Handy enough that Chris Ferdinandi wrote about…

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Tags: accessibility, ARIA, browser, html, pattern, rant, standards