Kaz Tsuchiya
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caztcha.bsky.social
Kaz Tsuchiya
@caztcha.bsky.social
81 followers 69 following 1.1K posts
Accessible & Usable / ウェブアクセシビリティコンサルタントとして活動中 / ウェブアクセシビリティ基盤委員会 (WAIC) 翻訳作業部会招聘専門家 / HCD-Net 認定 人間中心設計専門家 /

#accessibility #a11y #アクセシビリティ

https://accessible-usable.net
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caztcha.bsky.social
Kaz Tsuchiya @caztcha.bsky.social · Jan 4
2026年もどうぞよろしくお願い致します。

お仕事のご依頼・ご相談 | Accessible & Usable
accessible-usable.net/contact
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お仕事のご依頼・ご相談
ウェブは元来「アクセシブル (accessible)」な、つまり誰もが利用可能であるという特性を持つ情報コミュニケーション手段です。ユーザーがたまたまある条件 (様々な利用状況、身体特性、障害など) を抱えていたとしても、ウェブサイトやアプリケーションは、そういった人たちを排除することなく、等しく満足いく体験をもたらすものであってほしいものです。
accessible-usable.net
caztcha.bsky.social
Why real-time form validation can become an accessibility issue – a11yblog
a11yblog.com/2026/02/05/w...

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Why real-time form validation can become an accessibility issue
Although WCAG does not require real-time validation, it is a widely adopted pattern for improving perceived usability. When implemented well, it helps users identify and correct errors earlier,…
a11yblog.com
February 10, 2026 at 2:26 AM
caztcha.bsky.social
Accessible design is digital infrastructure — Anna E. Cook
annaecook.com/writing/2026...

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Accessible design is digital infrastructure — Anna E. Cook
What America by Design reveals about how public platforms fail when maintenance, governance, and accountability are treated as optional and how we can do better no matter our job title.
annaecook.com
February 10, 2026 at 2:24 AM
caztcha.bsky.social
Why Your Lighthouse Score of 100 Means Almost Nothing - AFixt
afixt.com/why-your-lig...

ウェブアクセシビリティにおける、ツールによる自動テスト結果と実際の問題とのギャップ。

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Why Your Lighthouse Score of 100 Means Almost Nothing - AFixt
Your website just passed automated accessibility testing with a perfect 100. Your team celebrates. Your compliance officer marks it as resolved. And none of this matters because you’re still locking…
afixt.com
February 10, 2026 at 2:18 AM
caztcha.bsky.social
Floating Action Buttons are bad, and what to do instead. | Erik Kroes - Accessibility Consultant
www.erikkroes.nl/blog/floatin...

フローティングアクションボタン (FAB) の問題。キーボード操作でアクセスしにくいことに加えて、コンテンツ文脈からの乖離によってかえってボタンが見つけにくくなる可能性も。
Floating Action Buttons are bad, and what to do instead.
Some thoughts on Floating Action Buttons as I always run into them, their inefficiency and inaccessible design.
www.erikkroes.nl
February 10, 2026 at 2:02 AM
caztcha.bsky.social
Weekly Reading List February 9 2026 - TPGi — a Vispero company
www.tpgi.com/weekly-readi...

私の記事「トラウマインフォームドデザイン (trauma-informed design)」もご紹介いただきました。ありがたき。🙏

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Weekly Reading List February 9 2026 - TPGi — a Vispero company
A weekly roundup of links to digital accessibility industry news, posted every Monday. Compiled by Ricky Onsman.
www.tpgi.com
February 10, 2026 at 1:53 AM
caztcha.bsky.social
ACT Rules Format 1.1 is a Web Standard (W3C Recommendation) | Web Accessibility Initiative (WAI) | W3C
www.w3.org/WAI/news/202...

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ACT Rules Format 1.1 is a Web Standard (W3C Recommendation)
Accessibility Conformance Testing (ACT) Rules Format 1.1 is now a web standard (W3C Recommendation). ACT Rules Format defines a format for writing accessibility test rules. The test rules can be used…
www.w3.org
February 9, 2026 at 2:23 AM
caztcha.bsky.social
For Review: Cognitive Accessibility Research Modules — First Draft Notes | Web Accessibility Initiative (WAI) | W3C
www.w3.org/WAI/news/202...

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For Review: Cognitive Accessibility Research Modules — First Draft Notes
Cognitive Accessibility Research Modules are available as first Draft Notes. The documents cover research on accessibility for people with cognitive and learning disabilities for Voice Systems and…
www.w3.org
February 9, 2026 at 2:22 AM
caztcha.bsky.social
For Review: W3C Accessibility Guidelines Evaluation Methodology (WCAG-EM) 2.0 — First Draft Note | Web Accessibility Initiative (WAI) | W3C
www.w3.org/WAI/news/202...

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For Review: W3C Accessibility Guidelines Evaluation Methodology (WCAG-EM) 2.0 — First Draft Note
W3C Accessibility Guidelines Evaluation Methodology (WCAG-EM) 2.0 is available as a first Draft Note. WCAG-EM describes a methodology with a step-by-step process to evaluate how well digital products…
www.w3.org
February 9, 2026 at 2:22 AM
caztcha.bsky.social
記事を書きました。✍️

書籍「Accessibility For Everyone」がウェブで無料公開 | Accessible & Usable
accessible-usable.net/2026/02/entr...

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書籍「Accessibility For Everyone」がウェブで無料公開
2017年に A Book Apart から出版されていた書籍「Accessibility For Everyone」(Laura Kalbag 著) が、このたびウェブで無料公開されました。
accessible-usable.net
February 8, 2026 at 11:40 PM
caztcha.bsky.social
Honoring Mobile OS Text Size — Adrian Roselli
adrianroselli.com/2026/02/hono...

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Honoring Mobile OS Text Size
If your users scale the text size in Android or iDeviceOS, that doesn’t always affect the size of text on a web page. It’s a function of browser and authored code, as opposed to a standardized approach....
adrianroselli.com
February 7, 2026 at 1:58 AM
caztcha.bsky.social
Canada’s ACA Digital Accessibility Deadlines: What to Do Now | UsableNet, Inc.
blog.usablenet.com/canadas-aca-...
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Canada’s ACA Digital Accessibility Deadlines: What to Do Now
Canada’s ACA Digital Technologies Accessibility Regulations introduce WCAG-aligned standards, assessments, and phased deadlines through 2027–2028. Learn how to prepare now.
blog.usablenet.com
February 4, 2026 at 9:26 AM
caztcha.bsky.social
You probably shouldn’t be annotating focus order – Eric Bailey
ericwbailey.website/published/yo...

私自身、この記事にあるように、アクセシビリティのアノテーションにフォーカス順序って不要なのでは、と思っています。拙作の Figma 用のアノテーションキット
www.figma.com/ja-jp/commun...
においても、実はフォーカス順序を示すパーツは用意していません。

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You probably shouldn’t be annotating focus order
Sometimes not doing something is the right move.
ericwbailey.website
February 4, 2026 at 9:16 AM
caztcha.bsky.social
さっそくサブスクライブ登録しました。

Announcing my new newsletter – Nicolas Steenhout - Keynote speaker and trainer.
nicolas-steenhout.com/announcing-n...

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Announcing my new newsletter
I have a newsletter now. Talking about a variety of topics. And adding illustrations. Please do subscribe.
nicolas-steenhout.com
February 4, 2026 at 9:10 AM
caztcha.bsky.social
Web Almanac 2025にみるWebアクセシビリティ | アクセシビリティBlog | ミツエーリンクス
www.mitsue.co.jp/knowledge/bl...

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Web Almanac 2025にみるWebアクセシビリティ | アクセシビリティBlog | ミツエーリンクス
HTTP ArchiveによるThe 2025 Web Almanacが先月公開されていました。この記事は、木達によるコラム2025年版Web Almanacにみる、アクセシビリティと表示パフォーマンスの現状で予告されていたものにな...
www.mitsue.co.jp
February 4, 2026 at 9:09 AM
caztcha.bsky.social
記事を書きました。✍️

トラウマインフォームドデザイン (trauma-informed design) | Accessible & Usable
accessible-usable.net/2026/02/entr...

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トラウマインフォームドデザイン (trauma-informed design)
ここ数年、海外のウェブアクセシビリティ関連のイベントで「trauma-informed design」をテーマにしたセッションを見かけるようになりました。興味深いテーマですが自分自身の中で咀嚼しきれていないという課題意識があり、改めて自分なりにまとめてみました。
accessible-usable.net
February 4, 2026 at 1:07 AM
caztcha.bsky.social
Accessibility For Everyone by Laura Kalbag
accessibilityforeveryone.site

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Accessibility For Everyone by Laura Kalbag
Read the book online for free.
accessibilityforeveryone.site
February 3, 2026 at 1:56 AM
caztcha.bsky.social
Accessible building blocks for web: form fields (on YouTube by TetraLogical)
www.youtube.com/watch?v=hj6w...

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Accessible building blocks for web: form fields
In this video, learn how to design and build forms that everyone can fill in with ease. By applying accessibility considerations to the building blocks of your web content you can create digital…
www.youtube.com
February 2, 2026 at 8:04 AM
caztcha.bsky.social
Accessible building blocks for web: buttons (on YouTube by TetraLogical)
www.youtube.com/watch?v=6oah...

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Accessible building blocks for web: buttons
In this video, learn what makes buttons easy to understand, identify, and activate for everyone, including people who use a keyboard, screen readers and other assistive technology. By applying…
www.youtube.com
February 2, 2026 at 7:59 AM
caztcha.bsky.social
Accessible building blocks for web: links (on YouTube by TetraLogical)
www.youtube.com/watch?v=zPCl...

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Accessible building blocks for web: links
In this video, learn how to create links that are clear, easy to identify, and work well for people who use a keyboard and other assistive technology. By applying accessibility considerations to the…
www.youtube.com
February 2, 2026 at 7:56 AM
caztcha.bsky.social
“WCAG is difficult to read, don’t read it” is a self-fulfilling prophecy · Eric Eggert
yatil.net/blog/wcag-is...

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“WCAG is difficult to read, don’t read it” is a self-fulfilling prophecy · Eric Eggert
First things first: Yes, WCAG (the Web Content Accessibility Guidelines) are not easy to read. This is not the point that I try to make …
yatil.net
February 2, 2026 at 1:34 AM
caztcha.bsky.social
Please do not use auto-scrolling content on the web and in applications – Bogdan on Digital Accessibility (A11y)
cerovac.com/a11y/2026/01...

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Please do not use auto-scrolling content on the web and in applications | Bogdan on Digital Accessibility (A11y)
Perhaps well-intended, the auto-scrolling content can be a real nightmare for multiple groups of users. I've done a mobile app audit and turning on screen reader exposed quite a messy experience -…
cerovac.com
February 2, 2026 at 1:33 AM
caztcha.bsky.social
なぜ現代アートは不愉快なのか｜石橋秀仁 情報アーキテクト
note.com/zerobase/n/n...

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なぜ現代アートは不愉快なのか｜石橋秀仁 情報アーキテクト
現代アートは不快だと表明した投稿がバズっていた。それを見て、良い機会なので、その不快感の正体について解説してみることにした。 …
note.com
February 2, 2026 at 1:33 AM
caztcha.bsky.social
From Demand Letter to Lawsuit: Understanding the Digital Accessibility Escalation Path - Dennis Deacon
www.dennisdeacon.com/accessibilit...

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From Demand Letter to Lawsuit: Understanding the Digital Accessibility Escalation Path - Dennis Deacon
Learn how digital accessibility demand letters escalate to lawsuits and how strategic responses can reduce legal risk and protect your organization.
www.dennisdeacon.com
January 29, 2026 at 12:44 AM
caztcha.bsky.social
Digital Accessibility: The Strategic Imperative Hiding in Plain Sight - Dennis Deacon
www.dennisdeacon.com/accessibilit...

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Digital Accessibility: The Strategic Imperative Hiding in Plain Sight - Dennis Deacon
Digital accessibility is now a strategic imperative, reducing legal risk, improving UX, boosting SEO, and driving competitive advantage across industries.
www.dennisdeacon.com
January 29, 2026 at 12:43 AM
caztcha.bsky.social
Why I Don’t Call Myself an Accessibility Expert • Buttondown
buttondown.com/access-abili...

自分の立ち位置と重ね合わせてしまった。「What Actually Matters (本当に大切なこと)」のくだり、本当に大事だなと思います。

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Why I Don’t Call Myself an Accessibility Expert
Oven-like dial that says “skill” with five settings - novice, average, skilled, specialist, and expert I’ve been working in the fields of disability...
buttondown.com
January 29, 2026 at 12:42 AM