How to Make Your Website Accessible: A WCAG 2.2 Quick-Start (2026)

How do you make a website accessible?

To make your website accessible, follow the four WCAG principles – content should be Perceivable, Operable, Understandable, and Robust. In practice that means adding descriptive alt text to images, ensuring strong color contrast, making everything usable by keyboard, labeling every form field, and using clear headings and semantic HTML. These few basics cover the majority of real-world accessibility issues.

Knowing how to make your website accessible isn’t just an ethical or legal box to tick – accessible sites are easier for everyone to use, rank better, and reach a wider audience (roughly one in six people lives with some form of disability). The good news is you don’t need to memorize all of WCAG 2.2 to make a real difference; a handful of fundamentals handle most problems, and many of them overlap with things you already care about, like good mobile design and clear structure.

The four principles (POUR)

Principle	Means	Example fix
Perceivable	People can perceive the content	Alt text, captions, contrast
Operable	People can operate the interface	Keyboard access, visible focus
Understandable	Content and UI are clear	Plain language, labeled forms
Robust	Works with assistive tech	Semantic, valid HTML

1 – Add descriptive alt text

Every meaningful image needs alt text that describes its content or purpose, so screen-reader users get the same information. Decorative images should have empty alt text (alt="") so they’re skipped.

2 – Check color contrast

Text needs enough contrast against its background — WCAG asks for a ratio of at least 4.5:1 for normal text. This is also just good design; our guide to choosing the right colors covers contrast in depth. Never rely on color alone to convey meaning.

3 – Make it keyboard-operable

Many people navigate with a keyboard, not a mouse. Make every link, button, and form control reachable with Tab and usable with Enter or Space, and visibly highlight the focused element.
If you can’t tab through your own site, neither can they.

4 – Label every form field

Each input needs a proper <label> so assistive tech announces what it’s for. Placeholder text is not a substitute. Clear labels and error messages help everyone complete forms.

5 – Use semantic structure

Use real headings (h1–h3) in order, landmarks (nav, main, footer), and lists for lists. Semantic HTML is what assistive tech relies on to make sense of a page — and it’s part of building well-structured sections.

Related guides

Keep improving the experience for everyone: mobile optimization, choosing accessible colors, and key website sections.

Frequently asked questions

What is WCAG?

The Web Content Accessibility Guidelines — the international standard for web accessibility, organized around four principles: Perceivable, Operable, Understandable, and Robust. Level AA is the common compliance target.

What are the most important accessibility fixes?

Descriptive alt text, sufficient color contrast, full keyboard operability with visible focus, labeled form fields, and semantic heading structure cover most real-world issues.

Is web accessibility legally required?

In many regions, yes — laws often reference WCAG AA. Beyond compliance, accessible sites reach more people and tend to perform better in search.

Does accessibility help SEO?

Yes. Alt text, semantic HTML, clear structure, and readable content benefit both assistive technology and search engines.