Skip to content
Markdown Syntax: Common Pitfalls and Accessibility thumbnail

Markdown Syntax: Common Pitfalls and Accessibility

Have you ever asked an AI to “put this in a table” and gotten back text littered with pipes (|) and dashes (-)? It looked like a clean table right there in the chat window — but the moment you copied it into a messaging app, it turned into a mess of symbols. Those symbols are Markdown. These days you run into it everywhere — GitHub READMEs, technical blogs, note-taking apps like Notion, even the replies an AI chatbot sends you. ...

Published date: 2026-08-15 · Reading time: 8 min · Word count: 3630 words · Author: Isaac
Accessibility Evaluation Has a Standard Too — WCAG-EM 2.0, Twelve Years Later thumbnail

Accessibility Evaluation Has a Standard Too — WCAG-EM 2.0, Twelve Years Later

↻ 2026-08-12 Updated Corrected the legal basis of Korea’s quality certification. With the Digital Inclusion Act taking effect on January 22, 2026, Article 47 of the Framework Act on Intelligent Informatization was repealed and the certification scheme moved to Articles 21–22 of the Digital Inclusion Act — this post had been citing the old provision. The body, FAQ, and comparison diagram are updated together. “Can we actually say our service is accessible?” ...

Published date: 2026-07-24 · Updated 2026-08-12 · Reading time: 15 min · Word count: 2986 words · Author: Isaac
An Open-Source Web Accessibility Checker — The A11y Check Story thumbnail

An Open-Source Web Accessibility Checker — The A11y Check Story

“We’re certified, so we should be fine.” It’s an easy thing to believe on the side that builds the website. Yet even on sites with a certification mark, it’s common for a screen reader user to fail to find the log-in button, or a low-vision user to be unable to read gray text on gray. Having been audited once, and being usable right now, are two different stories. The tool I built to shrink that gap is A11y Check. Put in a URL and it audits the accessibility automatically, then hands back a report and a fix guide. This article covers what A11y Check does, how it works, and why I opened the code. Let’s start with where it came from. ...

Published date: 2026-07-23 · Reading time: 13 min · Word count: 2610 words · Author: Isaac
You Are Already an Accessibility User thumbnail

You Are Already an Accessibility User

Take a moment to think about your day. Did you watch a video with captions because you were somewhere too noisy — or too quiet? Did you crank up your screen brightness because you couldn’t see it in the sun? Did you navigate your phone with just your thumb while carrying something in your other hand? Did you switch on dark mode because your eyes were tired? Congratulations. You are already an accessibility user. ...

Published date: 2026-05-20 · Reading time: 8 min · Word count: 1597 words · Author: Isaac
May Greetings for Everyone — The Story of Daon Card thumbnail

May Greetings for Everyone — The Story of Daon Card

May is a special month in Korea — packed with occasions to reach out to the people we love. Children’s Day (May 5), Parents’ Day (May 8), Teachers’ Day (May 15), Couples’ Day (May 21)… it’s no accident the whole month is called Family Month. Flower shops overflow with carnations, and KakaoTalk fills up with heartfelt digital cards. Sending a digital greeting card has become second nature. But I want to ask a simple question. ...

Published date: 2026-05-08 · Reading time: 4 min · Word count: 1611 words · Author: Isaac
Presenting at an Accessibility Seminar — A Journey Toward a Happier Web: The ModuWeb Story thumbnail

Presenting at an Accessibility Seminar — A Journey Toward a Happier Web: The ModuWeb Story

Prologue I’d prepared for this talk as a natural extension of the work I do every day, so I didn’t expect to be particularly nervous. But when I saw the list of other presenters ahead of time, I found myself wanting to do justice to the occasion — to make sure my talk held its own alongside theirs. Event poster — AI Accessibility Seminar: Accessibility for All. Date: Thursday, April 23, 2026, 10:00 AM – 12:20 PM. Venue: NIA Seoul Office, Basement Conference Room. Hosted by: Digital Accessibility Standardization Forum. Organized by: Universal Design Society. Event poster So I put together clean slides, wrote out a full script, ran through a few rehearsals — and headed to Seoul. The trip from Daegu isn’t exactly short, but I was in good spirits. There’s something about being needed, about being put to use, that makes you feel alive. ...

Published date: 2026-04-23 · Reading time: 4 min · Word count: 1713 words · Author: Isaac
Quiet Work — On Receiving Korea's Minister of Education Commendation at the 46th Disability Day thumbnail

Quiet Work — On Receiving Korea's Minister of Education Commendation at the 46th Disability Day

Every year, April 20 is Disability Day in Korea. I’ve been working on web accessibility at a university since 2010, but honestly, I never made a point of marking this day. I’d catch news about events held under the banner of Disability Day, but my own work felt like something that lived inside a monitor — far removed from those in-person gatherings. Then this year, on that very day, I received Korea’s Minister of Education Commendation. ...

맨 위로