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Adrian Roselli
Computer Vision Poison Hallucination RTFM

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Multi-Function Button

Table of Contents Example The HTML Live Region Button Decoration Accessible Name The Styles Hide the Live Region Color and Contrast Active Animations Text Resize and Reflow Windows High Contrast Mode The Script The Click Event Manipulate Outcomes Screen Reader Output WCAG Success Criteria What This Does Not Do Wrap-up…

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Tags: accessibility, ARIA, css, html, JavaScript, pattern, usability, UX, WHCM

Be Careful with Dynamic Accessible Names

Many of my clients try to reduce the number of controls on a screen by replacing them with single controls that change their name based on their purpose (what they unironically call reducing complexity). For example, presenting a download button that also acts as its own progress indicator and completion…

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Tags: accessibility, ARIA, html, UX, WCAG

Web Development Advent Calendars for 2020

This is why you never go to the (locally- and independently-owned) grocery store on an empty stomach. Web developers around the world have celebrated Saturnalia solstice Isaac Newton’s birthday Christmas with advent calendars covering web-related topics. As a result, you may recognize some of the ones listed below. Every year…

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Tags: accessibility, css, design, html, internet, standards, UX

More Accessible Skeletons

I had this post queued up for Halloween because, come on, skeletons, and then life did its thing and now it is a … Thanksgiving post? Many skeleton patterns do a poor job presenting themselves to screen reader users in any meaningful way. They often stuff aria-busy into their widget,…

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Tags: accessibility, css, html, pattern, usability, UX

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