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class="sidebar-filter-input-field false" type="text" placeholder="Filter" value=""/><button type="button" class="button action has-icon clear-sidebar-filter-button"><span class="button-wrap"><span class="icon icon-cancel "></span><span class="visually-hidden">Clear filter input</span></span></button></div></section></header><div class="sidebar-inner-nav"><div class="in-nav-toc"><div class="document-toc-container"><section class="document-toc"><header><h2 class="document-toc-heading">In this article</h2></header><ul class="document-toc-list"><li class="document-toc-item "><a class="document-toc-link" href="#the_four_principles">The four principles</a></li><li class="document-toc-item "><a class="document-toc-link" href="#legal_standing">Legal standing</a></li><li class="document-toc-item "><a class="document-toc-link" href="#see_also">See also</a></li></ul></section></div></div><div class="sidebar-body"><ol><li class="section"><a href="/en-US/docs/Web/Accessibility">Accessibility</a></li><li><details open=""><summary>Guides</summary><ol><li><a href="/en-US/docs/Web/Accessibility/Information_for_Web_authors">Accessibility information for web authors</a></li><li><a href="/en-US/docs/Web/Accessibility/Accessibility:_What_users_can_to_to_browse_safely">Accessibility: What users can do to browse more safely</a></li><li><a href="/en-US/docs/Web/Accessibility/An_overview_of_accessible_web_applications_and_widgets">An overview of accessible web applications and widgets</a></li><li><a href="/en-US/docs/Web/Accessibility/Keyboard-navigable_JavaScript_widgets">Keyboard-navigable JavaScript widgets</a></li><li><a href="/en-US/docs/Web/Accessibility/Mobile_accessibility_checklist">Mobile accessibility checklist</a></li><li><em><a href="/en-US/docs/Web/Accessibility/Understanding_WCAG" aria-current="page">Understanding the Web Content Accessibility Guidelines</a></em></li><li><a href="/en-US/docs/Web/Accessibility/Cognitive_accessibility">Cognitive accessibility</a></li><li><a href="/en-US/docs/Web/Accessibility/Accessibility_and_Spacial_Patterns">Accessibility and Spacial Patterns</a></li><li><a href="/en-US/docs/Web/Accessibility/Understanding_Colors_and_Luminance">Web Accessibility: Understanding Colors and Luminance</a></li><li><a href="/en-US/docs/Web/Accessibility/Seizure_disorders">Web accessibility for seizures and physical reactions</a></li></ol></details></li><li><details><summary>Learn accessibility</summary><ol><li><a href="/en-US/docs/Learn/Accessibility">Accessibility</a></li><li><a href="/en-US/docs/Learn/Accessibility/What_is_accessibility">What is accessibility?</a></li><li><a href="/en-US/docs/Learn/Accessibility/HTML">HTML: A good basis for accessibility</a></li><li><a href="/en-US/docs/Learn/Accessibility/CSS_and_JavaScript">CSS and JavaScript accessibility best practices</a></li><li><a href="/en-US/docs/Learn/Accessibility/WAI-ARIA_basics">WAI-ARIA basics</a></li><li><a href="/en-US/docs/Learn/Accessibility/Multimedia">Accessible multimedia</a></li><li><a href="/en-US/docs/Learn/Accessibility/Mobile">Mobile accessibility</a></li><li><a href="/en-US/docs/Learn/Accessibility/Accessibility_troubleshooting">Assessment: Accessibility troubleshooting</a></li></ol></details></li><li><details open=""><summary>WCAG</summary><ol><ol><li><em><a href="/en-US/docs/Web/Accessibility/Understanding_WCAG" aria-current="page">Overview</a></em></li><li><a href="/en-US/docs/Web/Accessibility/Understanding_WCAG/Keyboard">Keyboard</a></li><li><a href="/en-US/docs/Web/Accessibility/Understanding_WCAG/Operable">Operable</a></li><li><a href="/en-US/docs/Web/Accessibility/Understanding_WCAG/Perceivable">Perceivable</a></li><li><a href="/en-US/docs/Web/Accessibility/Understanding_WCAG/Robust">Robust</a></li><li><a href="/en-US/docs/Web/Accessibility/Understanding_WCAG/Text_labels_and_names">Text labels and names</a></li><li><a href="/en-US/docs/Web/Accessibility/Understanding_WCAG/Understandable">Understandable</a></li></ol></ol></details></li><li class="section"><a href="/en-US/docs/Web/Accessibility/ARIA">ARIA</a></li><li><details><summary>ARIA guides</summary><ol><li><a href="/en-US/docs/Web/Accessibility/ARIA/ARIA_Guides">ARIA guides</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/ARIA_Live_Regions">ARIA live regions</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/ARIA_Screen_Reader_Implementors_Guide">ARIA Screen Reader Implementors Guide</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/ARIA_Techniques">Using ARIA: Roles, states, and properties</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Multipart_labels">Multipart labels: Using ARIA for labels with embedded fields inside them</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/How_to_file_ARIA-related_bugs">How to file ARIA-related bugs</a></li></ol></details></li><li><details><summary>ARIA states and properties</summary><ol><ol><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes">Overview</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-activedescendant">aria-activedescendant</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-atomic">aria-atomic</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-autocomplete">aria-autocomplete</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-braillelabel">aria-braillelabel</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-brailleroledescription">aria-brailleroledescription</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-busy">aria-busy</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-checked">aria-checked</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-colcount">aria-colcount</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-colindex">aria-colindex</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-colindextext">aria-colindextext</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-colspan">aria-colspan</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-controls">aria-controls</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-current">aria-current</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-describedby">aria-describedby</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-description">aria-description</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-details">aria-details</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-disabled">aria-disabled</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-dropeffect">aria-dropeffect</a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">Deprecated</span> </abbr></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-errormessage">aria-errormessage</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-expanded">aria-expanded</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-flowto">aria-flowto</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-grabbed">aria-grabbed</a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">Deprecated</span> </abbr></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-haspopup">aria-haspopup</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-hidden">aria-hidden</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-invalid">aria-invalid</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-keyshortcuts">aria-keyshortcuts</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-label">aria-label</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-labelledby">aria-labelledby</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-level">aria-level</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-live">aria-live</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-modal">aria-modal</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-multiline">aria-multiline</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-multiselectable">aria-multiselectable</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-orientation">aria-orientation</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-owns">aria-owns</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-placeholder">aria-placeholder</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-posinset">aria-posinset</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-pressed">aria-pressed</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-readonly">aria-readonly</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-relevant">aria-relevant</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-required">aria-required</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-roledescription">aria-roledescription</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-rowcount">aria-rowcount</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-rowindex">aria-rowindex</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-rowindextext">aria-rowindextext</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-rowspan">aria-rowspan</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-selected">aria-selected</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-setsize">aria-setsize</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-sort">aria-sort</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-valuemax">aria-valuemax</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-valuemin">aria-valuemin</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-valuenow">aria-valuenow</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-valuetext">aria-valuetext</a></li></ol></ol></details></li><li><details><summary>ARIA roles</summary><ol><ol><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles">Overview</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/alert_role">ARIA: alert role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/alertdialog_role">ARIA: alertdialog role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/application_role">ARIA: application role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/article_role">ARIA: article role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/banner_role">ARIA: banner role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/button_role">ARIA: button role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/cell_role">ARIA: cell role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/checkbox_role">ARIA: checkbox role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/columnheader_role">ARIA: columnheader role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/combobox_role">ARIA: combobox role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/command_role">ARIA: command role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/comment_role">ARIA: comment role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/complementary_role">ARIA: complementary role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/composite_role">ARIA: composite role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/contentinfo_role">ARIA: contentinfo role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/definition_role">ARIA: definition role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/dialog_role">ARIA: dialog role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/directory_role">ARIA: directory role</a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">Deprecated</span> </abbr></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/document_role">ARIA: document role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/structural_roles">ARIA: document structural roles</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/feed_role">ARIA: feed role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/figure_role">ARIA: figure role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/form_role">ARIA: form role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/generic_role">ARIA: generic role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/grid_role">ARIA: grid role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/gridcell_role">ARIA: gridcell role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/group_role">ARIA: group role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/heading_role">ARIA: heading role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/img_role">ARIA: img role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/input_role">ARIA: input role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/landmark_role">ARIA: landmark role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/link_role">ARIA: link role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/list_role">ARIA: list role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/listbox_role">ARIA: listbox role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/listitem_role">ARIA: listitem role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/log_role">ARIA: log role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/main_role">ARIA: main role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/mark_role">ARIA: mark role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/marquee_role">ARIA: marquee role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/math_role">ARIA: math role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/menu_role">ARIA: menu role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/menubar_role">ARIA: menubar role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/menuitem_role">ARIA: menuitem role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/menuitemcheckbox_role">ARIA: menuitemcheckbox role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/menuitemradio_role">ARIA: menuitemradio role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/meter_role">ARIA: meter role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/navigation_role">ARIA: navigation role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/none_role">ARIA: none role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/note_role">ARIA: note role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/option_role">ARIA: option role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/presentation_role">ARIA: presentation role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/progressbar_role">ARIA: progressbar role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/radio_role">ARIA: radio role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/radiogroup_role">ARIA: radiogroup role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/range_role">ARIA: range role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/region_role">ARIA: region role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/roletype_role">ARIA: roletype role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/row_role">ARIA: row role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/rowgroup_role">ARIA: rowgroup role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/rowheader_role">ARIA: rowheader role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/scrollbar_role">ARIA: scrollbar role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/search_role">ARIA: search role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/searchbox_role">ARIA: searchbox role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/section_role">ARIA: section role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/sectionhead_role">ARIA: sectionhead role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/select_role">ARIA: select role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/separator_role">ARIA: separator role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/slider_role">ARIA: slider role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/spinbutton_role">ARIA: spinbutton role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/status_role">ARIA: status role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/structure_role">ARIA: structure role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/suggestion_role">ARIA: suggestion role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/switch_role">ARIA: switch role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/tab_role">ARIA: tab role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/table_role">ARIA: table role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/tablist_role">ARIA: tablist role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/tabpanel_role">ARIA: tabpanel role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/term_role">ARIA: term role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/textbox_role">ARIA: textbox role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/timer_role">ARIA: timer role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/toolbar_role">ARIA: toolbar role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/tooltip_role">ARIA: tooltip role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/tree_role">ARIA: tree role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/treegrid_role">ARIA: treegrid role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/treeitem_role">ARIA: treeitem role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/widget_role">ARIA: widget role</a></li><li><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/window_role">ARIA: window role</a></li></ol></ol></details></li></ol></div></div><section class="place side"></section></nav></aside><div class="toc-container"><aside class="toc"><nav><div class="document-toc-container"><section class="document-toc"><header><h2 class="document-toc-heading">In this article</h2></header><ul class="document-toc-list"><li class="document-toc-item "><a class="document-toc-link" href="#the_four_principles">The four principles</a></li><li class="document-toc-item "><a class="document-toc-link" href="#legal_standing">Legal standing</a></li><li class="document-toc-item "><a class="document-toc-link" href="#see_also">See also</a></li></ul></section></div></nav></aside><section class="place side"></section></div></div><main id="content" class="main-content "><article class="main-page-content" lang="en-US"><header><h1>Understanding the Web Content Accessibility Guidelines</h1></header><div class="section-content"><p>This set of articles provides quick explanations to help you understand the steps that need to be taken to conform to the recommendations outlined in the <a href="/en-US/docs/Glossary/WCAG">Web Content Accessibility Guidelines</a> (WCAG).</p> <p>The WCAG guidelines are a set of recommendations for making web content more accessible developed by W3C's <a href="/en-US/docs/Glossary/WAI">WAI</a>, primarily for people with disabilities — but also for all user agents, including some highly limited devices or services, such as digital assistants.</p> <p> WCAG 2.2 is the most recent version of the guidelines with WCAG 2.1 and 2.0 also widely used. WCAG 3.0 is the working draft. Newer versions of WCAG are not meant to supersede previous versions, but WAI recommends using the most recent version to ensure the best possible accessibility for your website. </p></div><section aria-labelledby="the_four_principles"><h2 id="the_four_principles"><a href="#the_four_principles">The four principles</a></h2><div class="section-content"><p>WCAG is broadly broken down into four principles — major things that web content <strong>must be</strong> to be considered accessible (see <a href="https://www.w3.org/WAI/WCAG22/Understanding/intro#understanding-the-four-principles-of-accessibility" class="external" target="_blank">Understanding the Four Principles of Accessibility</a> for the WCAG definitions).</p> <p>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 the WCAG 2 four guiding principles.</p> <ul> <li><a href="/en-US/docs/Web/Accessibility/Understanding_WCAG/Perceivable">Perceivable</a>: Users must be able to perceive it in some way, using one or more of their senses.</li> <li><a href="/en-US/docs/Web/Accessibility/Understanding_WCAG/Operable">Operable</a>: Users must be able to control UI elements (e.g. buttons must be clickable in some way — mouse, keyboard, voice command, etc.).</li> <li><a href="/en-US/docs/Web/Accessibility/Understanding_WCAG/Understandable">Understandable</a>: The content must be understandable to its users.</li> <li><a href="/en-US/docs/Web/Accessibility/Understanding_WCAG/Robust">Robust</a>: The content must be developed using well-adopted web standards that will work across different browsers, now and in the future.</li> </ul> <p>We also included two additional WCAG resources focused on making sites <a href="/en-US/docs/Web/Accessibility/Understanding_WCAG/Keyboard">keyboard accessible</a> and provided descriptive names or labels with <a href="/en-US/docs/Web/Accessibility/Understanding_WCAG/Text_labels_and_names">text labels and names</a>.</p></div></section><section aria-labelledby="legal_standing"><h2 id="legal_standing"><a href="#legal_standing">Legal standing</a></h2><div class="section-content"><p>This introductory documentation 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 recommend that you check the specific legislation governing accessibility for the web and public resources in your country or locale and seek the advice of a qualified lawyer.</p> <p><a href="/en-US/docs/Learn/Accessibility/What_is_accessibility">What is accessibility?</a> and particularity the <a href="/en-US/docs/Learn/Accessibility/What_is_accessibility#accessibility_guidelines_and_the_law">Accessibility guidelines and the law</a> section provide more related information.</p></div></section><section aria-labelledby="see_also"><h2 id="see_also"><a href="#see_also">See also</a></h2><div class="section-content"><ul> <li><a href="/en-US/docs/Web/Accessibility/Understanding_WCAG/Perceivable">WCAG: Perceivable</a></li> <li><a href="/en-US/docs/Web/Accessibility/Understanding_WCAG/Operable">WCAG: Operable</a></li> <li><a href="/en-US/docs/Web/Accessibility/Understanding_WCAG/Understandable">WCAG: Understandable</a></li> <li><a href="/en-US/docs/Web/Accessibility/Understanding_WCAG/Robust">WCAG: Robust</a></li> <li><a href="/en-US/docs/Web/Accessibility/Understanding_WCAG/Text_labels_and_names">WCAG text labels and names</a></li> <li><a href="/en-US/docs/Web/Accessibility/Understanding_WCAG/Keyboard">WCAG keyboard accessibility</a></li> <li><a href="https://www.w3.org/WAI/standards-guidelines/wcag/" class="external" target="_blank">WCAG Overview</a></li> <li><a href="https://www.w3.org/TR/WCAG22/" class="external" target="_blank">WCAG 2.2</a></li> </ul></div></section></article><aside class="article-footer"><div class="article-footer-inner"><div class="svg-container"><svg xmlns="http://www.w3.org/2000/svg" width="162" height="162" viewBox="0 0 162 162" fill="none" role="none"><mask id="b" fill="#fff"><path d="M97.203 47.04c8.113-7.886 18.004-13.871 28.906-17.492a78 78 0 0 1 33.969-3.39c11.443 1.39 22.401 5.295 32.024 11.411s17.656 14.28 23.476 23.86c5.819 9.579 9.269 20.318 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2.02 0 3.878.963 4.566 3.01.778-1.862 2.361-3.01 4.566-3.01 2.512 0 4.812 1.522 4.812 4.84v6.402h1.863v3.044h-.005Zm9.036.307c-4.314 0-7.296-2.635-7.296-7.106 0-4.096 2.484-7.481 7.514-7.481s7.481 3.38 7.481 7.29c0 4.472-3.228 7.297-7.699 7.297Zm22.578-.307H51.942l-.403-2.11 7.7-8.846h-4.376l-.621 2.17-2.888-.313.498-4.907h12.294l.313 2.11-7.767 8.852h4.533l.654-2.172 3.167.308-.872 4.908Zm7.99 0h-4.191v-5.03h4.19v5.03Zm0-8.976h-4.191v-5.03h4.19v5.03Zm2.618 8.976 6.054-21.358h3.945l-6.054 21.358h-3.945Zm8.136 0 6.048-21.358h3.945l-6.054 21.358h-3.939Zm21.486.307c-1.863 0-2.887-1.085-3.072-2.792-.805 1.427-2.232 2.792-4.498 2.792-2.02 0-4.314-1.085-4.314-4.006 0-3.447 3.323-4.253 6.518-4.253.778 0 1.584.034 2.3.124v-.465c0-1.427-.034-3.133-2.3-3.133-.84 0-1.488.061-2.143.402l-.453 1.578-3.195-.34.549-3.224c2.45-.996 3.692-1.27 5.992-1.27 3.01 0 5.556 1.55 5.556 4.75v6.083c0 .805.314 1.085.963 1.085.184 0 .375-.034.587-.095l.034 2.11a5.432 5.432 0 0 1-2.524.654Z" 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Content available under <a href="/en-US/docs/MDN/Writing_guidelines/Attrib_copyright_license">a Creative Commons license</a>.</p></div></div></footer></div><script type="application/json" id="hydration">{"url":"/en-US/docs/Web/Accessibility/Understanding_WCAG","doc":{"isMarkdown":true,"isTranslated":false,"isActive":true,"flaws":{},"title":"Understanding the Web Content Accessibility Guidelines","mdn_url":"/en-US/docs/Web/Accessibility/Understanding_WCAG","locale":"en-US","native":"English (US)","sidebarHTML":"<ol><li class=\"section\"><a href=\"/en-US/docs/Web/Accessibility\">Accessibility</a></li><li><details open=\"\"><summary>Guides</summary><ol><li><a href=\"/en-US/docs/Web/Accessibility/Information_for_Web_authors\">Accessibility information for web authors</a></li><li><a href=\"/en-US/docs/Web/Accessibility/Accessibility:_What_users_can_to_to_browse_safely\">Accessibility: What users can do to browse more safely</a></li><li><a href=\"/en-US/docs/Web/Accessibility/An_overview_of_accessible_web_applications_and_widgets\">An overview of accessible web applications and widgets</a></li><li><a href=\"/en-US/docs/Web/Accessibility/Keyboard-navigable_JavaScript_widgets\">Keyboard-navigable JavaScript widgets</a></li><li><a href=\"/en-US/docs/Web/Accessibility/Mobile_accessibility_checklist\">Mobile accessibility checklist</a></li><li><em><a href=\"/en-US/docs/Web/Accessibility/Understanding_WCAG\" aria-current=\"page\">Understanding the Web Content Accessibility Guidelines</a></em></li><li><a href=\"/en-US/docs/Web/Accessibility/Cognitive_accessibility\">Cognitive accessibility</a></li><li><a href=\"/en-US/docs/Web/Accessibility/Accessibility_and_Spacial_Patterns\">Accessibility and Spacial Patterns</a></li><li><a href=\"/en-US/docs/Web/Accessibility/Understanding_Colors_and_Luminance\">Web Accessibility: Understanding Colors and Luminance</a></li><li><a href=\"/en-US/docs/Web/Accessibility/Seizure_disorders\">Web accessibility for seizures and physical reactions</a></li></ol></details></li><li><details><summary>Learn accessibility</summary><ol><li><a href=\"/en-US/docs/Learn/Accessibility\">Accessibility</a></li><li><a href=\"/en-US/docs/Learn/Accessibility/What_is_accessibility\">What is accessibility?</a></li><li><a href=\"/en-US/docs/Learn/Accessibility/HTML\">HTML: A good basis for accessibility</a></li><li><a href=\"/en-US/docs/Learn/Accessibility/CSS_and_JavaScript\">CSS and JavaScript accessibility best practices</a></li><li><a href=\"/en-US/docs/Learn/Accessibility/WAI-ARIA_basics\">WAI-ARIA basics</a></li><li><a href=\"/en-US/docs/Learn/Accessibility/Multimedia\">Accessible multimedia</a></li><li><a href=\"/en-US/docs/Learn/Accessibility/Mobile\">Mobile accessibility</a></li><li><a href=\"/en-US/docs/Learn/Accessibility/Accessibility_troubleshooting\">Assessment: Accessibility troubleshooting</a></li></ol></details></li><li><details open=\"\"><summary>WCAG</summary><ol><ol><li><em><a href=\"/en-US/docs/Web/Accessibility/Understanding_WCAG\" aria-current=\"page\">Overview</a></em></li><li><a href=\"/en-US/docs/Web/Accessibility/Understanding_WCAG/Keyboard\">Keyboard</a></li><li><a href=\"/en-US/docs/Web/Accessibility/Understanding_WCAG/Operable\">Operable</a></li><li><a href=\"/en-US/docs/Web/Accessibility/Understanding_WCAG/Perceivable\">Perceivable</a></li><li><a href=\"/en-US/docs/Web/Accessibility/Understanding_WCAG/Robust\">Robust</a></li><li><a href=\"/en-US/docs/Web/Accessibility/Understanding_WCAG/Text_labels_and_names\">Text labels and names</a></li><li><a href=\"/en-US/docs/Web/Accessibility/Understanding_WCAG/Understandable\">Understandable</a></li></ol></ol></details></li><li class=\"section\"><a href=\"/en-US/docs/Web/Accessibility/ARIA\">ARIA</a></li><li><details><summary>ARIA guides</summary><ol><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/ARIA_Guides\">ARIA guides</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/ARIA_Live_Regions\">ARIA live regions</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/ARIA_Screen_Reader_Implementors_Guide\">ARIA Screen Reader Implementors Guide</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/ARIA_Techniques\">Using ARIA: Roles, states, and properties</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Multipart_labels\">Multipart labels: Using ARIA for labels with embedded fields inside them</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/How_to_file_ARIA-related_bugs\">How to file ARIA-related bugs</a></li></ol></details></li><li><details><summary>ARIA states and properties</summary><ol><ol><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes\">Overview</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-activedescendant\">aria-activedescendant</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-atomic\">aria-atomic</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-autocomplete\">aria-autocomplete</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-braillelabel\">aria-braillelabel</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-brailleroledescription\">aria-brailleroledescription</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-busy\">aria-busy</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-checked\">aria-checked</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-colcount\">aria-colcount</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-colindex\">aria-colindex</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-colindextext\">aria-colindextext</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-colspan\">aria-colspan</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-controls\">aria-controls</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-current\">aria-current</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-describedby\">aria-describedby</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-description\">aria-description</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-details\">aria-details</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-disabled\">aria-disabled</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-dropeffect\">aria-dropeffect</a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">Deprecated</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-errormessage\">aria-errormessage</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-expanded\">aria-expanded</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-flowto\">aria-flowto</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-grabbed\">aria-grabbed</a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">Deprecated</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-haspopup\">aria-haspopup</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-hidden\">aria-hidden</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-invalid\">aria-invalid</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-keyshortcuts\">aria-keyshortcuts</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-label\">aria-label</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-labelledby\">aria-labelledby</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-level\">aria-level</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-live\">aria-live</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-modal\">aria-modal</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-multiline\">aria-multiline</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-multiselectable\">aria-multiselectable</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-orientation\">aria-orientation</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-owns\">aria-owns</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-placeholder\">aria-placeholder</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-posinset\">aria-posinset</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-pressed\">aria-pressed</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-readonly\">aria-readonly</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-relevant\">aria-relevant</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-required\">aria-required</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-roledescription\">aria-roledescription</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-rowcount\">aria-rowcount</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-rowindex\">aria-rowindex</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-rowindextext\">aria-rowindextext</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-rowspan\">aria-rowspan</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-selected\">aria-selected</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-setsize\">aria-setsize</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-sort\">aria-sort</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-valuemax\">aria-valuemax</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-valuemin\">aria-valuemin</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-valuenow\">aria-valuenow</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-valuetext\">aria-valuetext</a></li></ol></ol></details></li><li><details><summary>ARIA roles</summary><ol><ol><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles\">Overview</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/alert_role\">ARIA: alert role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/alertdialog_role\">ARIA: alertdialog role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/application_role\">ARIA: application role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/article_role\">ARIA: article role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/banner_role\">ARIA: banner role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/button_role\">ARIA: button role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/cell_role\">ARIA: cell role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/checkbox_role\">ARIA: checkbox role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/columnheader_role\">ARIA: columnheader role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/combobox_role\">ARIA: combobox role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/command_role\">ARIA: command role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/comment_role\">ARIA: comment role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/complementary_role\">ARIA: complementary role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/composite_role\">ARIA: composite role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/contentinfo_role\">ARIA: contentinfo role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/definition_role\">ARIA: definition role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/dialog_role\">ARIA: dialog role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/directory_role\">ARIA: directory role</a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">Deprecated</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/document_role\">ARIA: document role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/structural_roles\">ARIA: document structural roles</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/feed_role\">ARIA: feed role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/figure_role\">ARIA: figure role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/form_role\">ARIA: form role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/generic_role\">ARIA: generic role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/grid_role\">ARIA: grid role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/gridcell_role\">ARIA: gridcell role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/group_role\">ARIA: group role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/heading_role\">ARIA: heading role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/img_role\">ARIA: img role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/input_role\">ARIA: input role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/landmark_role\">ARIA: landmark role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/link_role\">ARIA: link role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/list_role\">ARIA: list role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/listbox_role\">ARIA: listbox role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/listitem_role\">ARIA: listitem role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/log_role\">ARIA: log role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/main_role\">ARIA: main role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/mark_role\">ARIA: mark role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/marquee_role\">ARIA: marquee role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/math_role\">ARIA: math role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/menu_role\">ARIA: menu role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/menubar_role\">ARIA: menubar role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/menuitem_role\">ARIA: menuitem role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/menuitemcheckbox_role\">ARIA: menuitemcheckbox role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/menuitemradio_role\">ARIA: menuitemradio role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/meter_role\">ARIA: meter role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/navigation_role\">ARIA: navigation role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/none_role\">ARIA: none role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/note_role\">ARIA: note role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/option_role\">ARIA: option role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/presentation_role\">ARIA: presentation role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/progressbar_role\">ARIA: progressbar role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/radio_role\">ARIA: radio role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/radiogroup_role\">ARIA: radiogroup role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/range_role\">ARIA: range role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/region_role\">ARIA: region role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/roletype_role\">ARIA: roletype role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/row_role\">ARIA: row role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/rowgroup_role\">ARIA: rowgroup role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/rowheader_role\">ARIA: rowheader role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/scrollbar_role\">ARIA: scrollbar role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/search_role\">ARIA: search role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/searchbox_role\">ARIA: searchbox role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/section_role\">ARIA: section role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/sectionhead_role\">ARIA: sectionhead role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/select_role\">ARIA: select role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/separator_role\">ARIA: separator role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/slider_role\">ARIA: slider role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/spinbutton_role\">ARIA: spinbutton role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/status_role\">ARIA: status role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/structure_role\">ARIA: structure role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/suggestion_role\">ARIA: suggestion role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/switch_role\">ARIA: switch role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/tab_role\">ARIA: tab role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/table_role\">ARIA: table role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/tablist_role\">ARIA: tablist role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/tabpanel_role\">ARIA: tabpanel role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/term_role\">ARIA: term role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/textbox_role\">ARIA: textbox role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/timer_role\">ARIA: timer role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/toolbar_role\">ARIA: toolbar role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/tooltip_role\">ARIA: tooltip role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/tree_role\">ARIA: tree role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/treegrid_role\">ARIA: treegrid role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/treeitem_role\">ARIA: treeitem role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/widget_role\">ARIA: widget role</a></li><li><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/window_role\">ARIA: window role</a></li></ol></ol></details></li></ol>","sidebarMacro":"AccessibilitySidebar","body":[{"type":"prose","value":{"id":null,"title":null,"isH3":false,"content":"<p>This set of articles provides quick explanations to help you understand the steps that need to be taken to conform to the recommendations outlined in the <a href=\"/en-US/docs/Glossary/WCAG\">Web Content Accessibility Guidelines</a> (WCAG).</p>\n<p>The WCAG guidelines are a set of recommendations for making web content more accessible developed by W3C's <a href=\"/en-US/docs/Glossary/WAI\">WAI</a>, primarily for people with disabilities — but also for all user agents, including some highly limited devices or services, such as digital assistants.</p>\n<p>\n WCAG 2.2 is the most recent version of the guidelines with WCAG 2.1 and 2.0 also widely used. WCAG 3.0 is the working draft.\n Newer versions of WCAG are not meant to supersede previous versions, but WAI recommends using the most recent version to ensure the best possible accessibility for your website.\n</p>"}},{"type":"prose","value":{"id":"the_four_principles","title":"The four principles","isH3":false,"content":"<p>WCAG is broadly broken down into four principles — major things that web content <strong>must be</strong> to be considered accessible (see <a href=\"https://www.w3.org/WAI/WCAG22/Understanding/intro#understanding-the-four-principles-of-accessibility\" class=\"external\" target=\"_blank\">Understanding the Four Principles of Accessibility</a> for the WCAG definitions).</p>\n<p>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 the WCAG 2 four guiding principles.</p>\n<ul>\n <li><a href=\"/en-US/docs/Web/Accessibility/Understanding_WCAG/Perceivable\">Perceivable</a>: Users must be able to perceive it in some way, using one or more of their senses.</li>\n <li><a href=\"/en-US/docs/Web/Accessibility/Understanding_WCAG/Operable\">Operable</a>: Users must be able to control UI elements (e.g. buttons must be clickable in some way — mouse, keyboard, voice command, etc.).</li>\n <li><a href=\"/en-US/docs/Web/Accessibility/Understanding_WCAG/Understandable\">Understandable</a>: The content must be understandable to its users.</li>\n <li><a href=\"/en-US/docs/Web/Accessibility/Understanding_WCAG/Robust\">Robust</a>: The content must be developed using well-adopted web standards that will work across different browsers, now and in the future.</li>\n</ul>\n<p>We also included two additional WCAG resources focused on making sites <a href=\"/en-US/docs/Web/Accessibility/Understanding_WCAG/Keyboard\">keyboard accessible</a> and provided descriptive names or labels with <a href=\"/en-US/docs/Web/Accessibility/Understanding_WCAG/Text_labels_and_names\">text labels and names</a>.</p>"}},{"type":"prose","value":{"id":"legal_standing","title":"Legal standing","isH3":false,"content":"<p>This introductory documentation 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 recommend that you check the specific legislation governing accessibility for the web and public resources in your country or locale and seek the advice of a qualified lawyer.</p>\n<p><a href=\"/en-US/docs/Learn/Accessibility/What_is_accessibility\">What is accessibility?</a> and particularity the <a href=\"/en-US/docs/Learn/Accessibility/What_is_accessibility#accessibility_guidelines_and_the_law\">Accessibility guidelines and the law</a> section provide more related information.</p>"}},{"type":"prose","value":{"id":"see_also","title":"See also","isH3":false,"content":"<ul>\n <li><a href=\"/en-US/docs/Web/Accessibility/Understanding_WCAG/Perceivable\">WCAG: Perceivable</a></li>\n <li><a href=\"/en-US/docs/Web/Accessibility/Understanding_WCAG/Operable\">WCAG: Operable</a></li>\n <li><a href=\"/en-US/docs/Web/Accessibility/Understanding_WCAG/Understandable\">WCAG: Understandable</a></li>\n <li><a href=\"/en-US/docs/Web/Accessibility/Understanding_WCAG/Robust\">WCAG: Robust</a></li>\n <li><a href=\"/en-US/docs/Web/Accessibility/Understanding_WCAG/Text_labels_and_names\">WCAG text labels and names</a></li>\n <li><a href=\"/en-US/docs/Web/Accessibility/Understanding_WCAG/Keyboard\">WCAG keyboard accessibility</a></li>\n <li><a href=\"https://www.w3.org/WAI/standards-guidelines/wcag/\" class=\"external\" target=\"_blank\">WCAG Overview</a></li>\n <li><a href=\"https://www.w3.org/TR/WCAG22/\" class=\"external\" target=\"_blank\">WCAG 2.2</a></li>\n</ul>"}}],"toc":[{"text":"The four principles","id":"the_four_principles"},{"text":"Legal standing","id":"legal_standing"},{"text":"See also","id":"see_also"}],"summary":"This set of articles provides quick explanations to help you understand the steps that need to be taken to conform to the recommendations outlined in the Web Content Accessibility Guidelines (WCAG).","popularity":0.0039,"modified":"2024-08-13T04:35:31.000Z","other_translations":[{"locale":"de","title":"Verständnis der Web Content Accessibility Guidelines","native":"Deutsch"},{"locale":"es","title":"Understanding the Web Content Accessibility Guidelines","native":"Español"},{"locale":"fr","title":"Understanding the Web Content Accessibility Guidelines","native":"Français"},{"locale":"ja","title":"ウェブコンテンツ・アクセシビリティガイドラインを理解する","native":"日本語"},{"locale":"ko","title":"웹 컨텐츠 접근성 지침 이해하기","native":"한국어"},{"locale":"pt-BR","title":"Entendendo as Diretrizes de Acessibilidade do Conteúdo Web","native":"Português (do Brasil)"},{"locale":"zh-CN","title":"理解 Web 内容无障碍指南","native":"中文 (简体)"}],"pageType":"guide","source":{"folder":"en-us/web/accessibility/understanding_wcag","github_url":"https://github.com/mdn/content/blob/main/files/en-us/web/accessibility/understanding_wcag/index.md","last_commit_url":"https://github.com/mdn/content/commit/1a7695e13c51d85a81e3e5d85feedbc5dbd2a379","filename":"index.md"},"short_title":"Understanding the Web Content Accessibility Guidelines","parents":[{"uri":"/en-US/docs/Web","title":"References"},{"uri":"/en-US/docs/Web/Accessibility","title":"Accessibility"},{"uri":"/en-US/docs/Web/Accessibility/Understanding_WCAG","title":"Understanding the Web Content Accessibility Guidelines"}],"pageTitle":"Understanding the Web Content Accessibility Guidelines - Accessibility | MDN","noIndexing":false}}</script></body></html>