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Adrian Roselli
Outsourced Machine Learning Overlay SME

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Browser Video Players Review

The Test Page The Code Testing Results Keyboard Screen Readers Voice Control, Forced Colors, Speed Media Queries: 20 December 2023 Audio Description: 20 December 2023 Wrap-up Browsers each provide built-in video players for the <video> element. Nearly four years ago Scott Vinkle wrote How accessible is the HTML video player?,…

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Tags: accessibility, browser, Chrome, Firefox, html, mobile, Safari, standards, W3C, whatwg

Where to Put Focus When Deleting a Thing

TL;DR: When deleting something you should generally move focus to the prior equivalent control or its grouping container. Why This Is a Thing Plenty of user interfaces let users delete things that are on the screen. It may be an extra address, a calendar item, a message (the same as…

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Tags: accessibility, JavaScript, pattern, usability, UX

An alt Decision Tree Using Only :has()

I use the CSS :has() pseudo-class to provide an interactive alt text decision tree (from the W3C WAI Tutorial) that uses no script. It is progressively enhanced, so browsers without support for :has() still get all the content. See my post Under-Engineered Dependency Questions if you want my argument why…

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Tags: accessibility, css, html, WAI

Progressively Enhanced HTML Accordion

Does what it says on the tin. Uses <details> and <summary> with a bit of ARIA to create an accordion that works without JavaScript while working better with JavaScript. Mostly. See the Pen Progressively Enhanced HTML Accordion by Adrian Roselli (@aardrian) on CodePen. Visit the standalone version for testing or…

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

Blockquotes in Screen Readers

TL;DR: This post does not assert the correct way to code blockquotes, it will only demonstrate how screen readers announce some existing patterns. Test Details The first four examples are lifted from WHATWG HTML’s <blockquote> entry. The next three are from W3C HTML’s 2019 <blockquote> guidance (the W3C HTML spec…

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Tags: accessibility, html, standards, usability, W3C, whatwg

Under-Engineered Comboboxen?

When I wrote Under-Engineered Text Boxen in 2019 I mentioned <datalist> (WHATWG, MDN) but did not dwell on it. Partly because support was poor at the time. Once Can I Use’s <datalist> entry listed Firefox on Android supporting it in version 110, I got excited and started testing to write…

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

No, ‘AI’ Will Not Fix Accessibility

In recent years, a series of new technologies have provided better experiences and outcomes for disabled users. Collectively branded “Artificial Intelligence”, the two biggest breakthroughs have been in computer vision and large language models (LLM). The former, computer vision, allows a computer to describe an image based on extensive training…

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Tags: accessibility, rant, standards, usability

Brief Note on Popovers with Dialogs

This is not a comparison between popovers and dialogs, nor is it a discussion of support. This is me trying to get ahead of a potential issue for users when developers mix and match the patterns. I will let this 32 second video explain: Sorry, your browser doesn’t support embedded…

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Tags: accessibility, html, usability, UX

Be Careful Using ‘Menu’

TL;DR: Be careful when using the word menu. Be certain you have chosen the term that accurately describes the control you want. If this post looks familiar to you, that is because it is essentially a redress of my 2020 post Stop Using ‘Drop-down’. It is not as divergent as…

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Tags: html, lingo, pattern, standards

WWW Project Turns 30

Thirty years ago, on April 30 1993, European Organization for Nuclear Research (CERN) announced the World Wide Web project. While the web existed before then, this marks its release into the public domain. The six images represent Mosaic 1.0 viewing the original versions of The World Wide Web project, Technical…

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Tags: browser, internet

No, APG’s Support Charts Are Not ‘Can I Use’ for ARIA

TL;DR: Despite claims, APG’s support charts are not ARIA support charts and they are not analogous to Can I Use. While brand new and likely to grow, their scope is still strictly APG patterns. Why I Say This I have opinions on the ARIA Authoring Practices Guide (APG). I am…

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Tags: accessibility, ARIA, rant, standards

Don’t Override Screen Reader Pronunciation

When many devs, testers, and authors first start listening to content through a screen reader, they are surprised to hear dates, pricing, names, abbreviations, acronyms, etc. announced differently than they expect. With the best of intentions (or branding panic) they may seek to force screen readers to announce content as…

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Tags: accessibility, standards, usability, UX