---
title: "What is WCAG? A Simple Guide to Web Accessibility"
url: "https://nitsantech.de/en/accessibility-glossary/wcag"
description: Learn what WCAG is, why it matters, and how to make your website accessible for everyone, including people with disabilities.
date: 2025-03-11
modified: 2025-09-25
lastUpdated: 2026-02-25
---

# What is WCAG? A Simple Guide to Web Accessibility

[ Accessibility Glossary ](https://nitsantech.de/en/accessibility-glossary)WCAG
====

 [

  W3C  ](https://nitsantech.de/en/accessibility-glossary/w3c) [

  Web Accessibility  ](https://nitsantech.de/en/accessibility-glossary/web-accessibility)

 Accessibility is about creating a web that everyone can use, including people with disabilities. The **Web Content Accessibility Guidelines (**[**WCAG**](https://www.wcag.com/)**)** are a set of international rules designed to make websites more accessible for everyone.

In this blog, we’ll break down what WCAG is and why it matters, in simple terms.

**What is WCAG?**
-----------------

WCAG stands for **Web Content Accessibility Guidelines**. These guidelines are created by the **World Wide Web Consortium (**[**W3C**](https://www.w3.org/mission/accessibility/)**)**, a global group working to make the internet accessible to all.

The goal of WCAG is to ensure that websites, apps, and other digital content can be used by people with:

- **Visual impairments** (like blindness or color blindness)
- **Hearing impairments** (like partial hearing loss or total deafness)
- **Physical disabilities** (like difficulty using a mouse or keyboard)
- **Cognitive challenges** (like dyslexia or memory issues)

By following WCAG, website creators can ensure that their sites work well for everyone, not just those without disabilities.

### **The Four Principles of WCAG**

WCAG is built around four key principles, which are easy to remember as **P.O.U.R.**:

1. **Perceivable**
    Information should be presented in ways that people can see or hear. For example:
    - Adding text descriptions to images (alt text) so screen readers can describe them.
    - Providing captions for videos so deaf users can understand the content.
2. **Operable**
    The website should work in ways everyone can use, no matter their device or ability. For example:
    - Allowing navigation with a keyboard for people who cannot use a mouse.
    - Avoiding flashing content that could trigger seizures.
3. **Understandable**
    Content should be clear and easy to understand. For example:
    - Writing in simple language so it’s accessible to a wider audience.
    - Consistent layouts to make navigation predictable.
4. **Robust**
    Websites should work across all devices and assistive technologies. For example:
    - Ensuring compatibility with screen readers or voice-controlled tools.

**Why is WCAG Important?**
--------------------------

1. **Inclusion**:
    Millions of people worldwide have disabilities. Making websites accessible ensures they are not excluded from using the internet.
2. **Legal Compliance**:
    Many countries have [laws](https://nitsantech.de/en/blog/prepare-typo3-site-for-eu-accessibility-laws) requiring websites to meet [WCAG standards](https://nitsantech.de/en/blog/typo3-accessibility-checker). Not following these can lead to legal issues.
3. **Better User Experience**:
    [Accessibility](https://t3planet.de/en/blog/barrier-free-typo3-website/) features often improve the experience for all users. For instance, captions on videos are helpful in noisy environments.
4. **Improved SEO**:
    Following WCAG can also improve your website's visibility on search engines, as accessible websites tend to have cleaner code and better structure.

### **How to Start with WCAG?**

If you want your website to meet WCAG standards, start with these steps:

1. **Test Your Website**:
    Use [**TYPO3 Accessibility Checker**](https://nitsantech.de/en/blog/typo3-accessibility-checker) to check how user-friendly your site is for people with disabilities. Tools like [WAVE](https://wave.webaim.org/), [Lighthouse](https://chromewebstore.google.com/detail/lighthouse/blipmdconlkpinefehnmjammfjpmpbjk), or Axe can help assess [**TYPO3 Accessibility**](https://nitsantech.de/en/blog/typo3-accessibility), ensuring that your site is usable for all.
2. **Add Alternative Text**:
    Ensure all images and media have descriptions for those using screen readers.
3. **Check Your Contrast**:
    Make sure text and background colors are easy to distinguish.
4. **Simplify Navigation**:
    Ensure users can move through your site easily with a keyboard or [**screen reader**](https://nitsantech.de/en/accessibility-glossary/screen-readers).
5. **Ask for Feedback**:
    Involve people with disabilities in testing your site. Their input is invaluable.

**Conclusion**
--------------

WCAG is about more than just following rules, it’s about creating a web that works for everyone. By making your website accessible, you open it up to a larger audience and make the internet a more inclusive space.

Accessibility isn’t just a responsibility, it’s an opportunity to show that you care about all your users.