Entendendo as Diretrizes de Acessibilidade do Conteúdo Web
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Este conjunto de artigos fornece explicações rápidas para ajudá-lo a entender as etapas que devem ser seguidas para estar em conformidade com as recomendações descritas nas Diretrizes de Acessibilidade para Conteúdo Web 2.0 ou 2.1 do W3C (ou apenas WCAG, para as finalidades deste artigo).

O WCAG 2.0 e 2.1 fornece um conjunto detalhado de diretrizes para tornar o conteúdo web mais acessível para pessoas com uma ampla variedade de deficiências. Isso é compreensivo, porém incrivelmente detalhado e muito difícil de obter uma compreensão rápida disso. Por essa razão, nós fizemos uma sumário com os passos práticosque você precisa saber para satisfazer as diferentes recomendações, com mais alguns link para mais detalhes do que está sendo solicitado.

Os quatro princípios
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WCAG is broadly broken down into four principles — major things that web content **must be** to be considered accessible (see Understanding the Four Principles of Accessibilityfor the WCAG definitions).

Each of the links below will take you to pages that further expand on these areas, giving you practical advice on how to write your web content so it conforms to the success criteria outlined in each of the WCAG 2.0 and 2.1 guidelines that further sub-divides each principle.

* Perceivable: Users must be able to perceive it in some way, using one or more of their senses.
* Operable: Users must be able to control UI elements (e.g. buttons must be clickable in some way — mouse, keyboard, voice command, etc.).
* Understandable: The content must be understandable to its users.
* Robust: The content must be developed using well-adopted web standards that will work across different browsers, now and in the future.
Should I use WCAG 2.0 or 2.1?
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WCAG 2.1 is the most recent and relevant accessibility standard. Use WCAG 2.1 to help more people with disabilities and reduce the future legal risk for web site owners. Target WCAG 2.0 first when allocating resources. Then step up to WCAG 2.1.

### O que é o WCAG 2.1?

WCAG 2.1 was published as an official recommendation on 05 June 2018. The European Union (EU) adopted WCAG 2.1 as the digital accessibility standard in September 2018. W3C published a press release WCAG 2.1 Adoption in Europe.

WCAG 2.1 includes:

* all of WCAG 2.0 (verbatim, word-for-word)
* 17 new Success Criteria at the A / AA / AAA levels primarily addressing user needs in these areas:
    + Mobile Accessibility
    + Low Vision
    + Cognitive
* Leia mais sobre o WCAG 2.1:
    + Deque: WCAG 2.1: What is Next for Accessibility Guidelines
    + TPG: Web Content Accessibility Guidelines (WCAG) 2.1
Padrão legal
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This guide is intended to provide practical information to help you build better, more accessible websites. However, we are not lawyers, and none of this constitutes legal advice. If you are worried about the legal implications of web accessibility, we'd recommend that you check the specific legislation governing accessibility for the web/public resources in your country or locale, and seek the advice of a qualified lawyer.

O que é acessibilidade? (en-US) e particulamente o Guia de Acessibilidade e a seção de regras (en-US) fornecem mais informações relacionadas.