Design for All = Design for Speed

Often Accessibility (A11y) is seen as "extra effort". "We still have to make the site blind-friendly." That is wrong thinking. Accessibility and Performance have the same goal: Removing obstacles.

• A blind person uses a screen reader. They hate bloated, broken HTML structures.
• A user in a dead zone uses an old phone. They hate bloated, huge JavaScript files.

If you optimise for one, you automatically optimise for the other. Semantic, clean HTML is the key to both.

Featured Snippet: The intersection of Accessibility and Performance is large. Both benefit from 1. Semantic HTML (instead of div soup), which lets browsers render faster. 2. Avoiding JavaScript where possible (native HTML elements like <details> or <button> are accessible and performant). 3. Clear contrasts and structures. An accessible site is almost always a fast site too.

---

The Cost of Inaction: Excluding 20%

Approx. 15-20% of the population have a disability (Visual, Motor, Cognitive). Approx. 50% of users temporarily have bad internet (Train, Basement). If your site is fat and complex, you exclude both groups. That is not just antisocial, that is bad for business. And from 2025 Accessibility is mandatory for e-commerce in the EU (European Accessibility Act).

---

Common Enemies: JavaScript & Div-Soup

Native HTML vs. Custom Widgets

Developers like building "Custom Dropdowns" with 500 lines of JavaScript and 20 <div>s. That is hard for screen readers (you have to patch ARIA roles). And it is hard for the CPU (parsing JavaScript). Solution: Use <select>. It is ugly? Style it. It is native. It is accessible. It has 0KB JavaScript Overhead.

Images & Alt-Texts

An image without alt text is invisible to the blind. An image that is 5MB big is "invisible" to people with bad networks (doesn't load). If you maintain alt texts, you help the blind. And if the image doesn't load (due to optimisation), the seeing user at least sees the text ("Red Sneakers"). This is called Robustness.

---

"Shift Left": Accessibility as Architecture Decision

Don't test at the end. Plan at the beginning. If you choose a framework that renders everything in JavaScript (Client Side Only), you have problems with screen readers and performance. If you choose Server Side Rendering (HTML First), you win on both fronts. HTML is robust. JavaScript is fragile.

---

Myth-Busting: "Accessibility makes design ugly"

"We need high contrast, so I can't use pastel colours?" You can use pastel. But not for text. Readability is the basis of UX. Text you can't read (grey on light grey) is not "Design". It is decoration. Good design is usable. For everyone.

---

Unasked Question: "Does this help SEO?"

Yes. Google is the most important "blind user". Googlebot sees no images. It "reads" the code. It navigates like a screen reader through headings (H1-H6). A site perfectly structured for screen readers is perfectly structured for Google. Accessibility = SEO.

---

FAQ: A11y & Speed