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<!DOCTYPE html> <html class="no-js" lang="en" dir="ltr" prefix="og: http://ogp.me/ns#"> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <script> document.documentElement.className = document.documentElement.className.replace('no-js', 'has-js'); function downloadJSAtOnload() { var element = document.createElement("script"); element.src = "/WAI/assets/scripts/main.js?1732807903713432608"; document.body.appendChild(element); } window.addEventListener("load", downloadJSAtOnload, false); </script> <link rel="stylesheet" href="/WAI/assets/css/style.css?1732807903713432608"> <title> Tips and Tricks | Web Accessibility Initiative (WAI) | W3C</title> <meta name="generator" content="Jekyll v4.3.3" /> <meta property="og:title" content="Tips and Tricks" /> <meta name="author" content="W3C Web Accessibility Initiative (WAI)" /> <meta property="og:locale" content="en" /> <meta 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class="page-link"><span>Headings</span></a></li><li> <a lang="en" href="/WAI/tutorials/page-structure/content/" class="page-link"><span>Content Structure</span></a></li><li> <a lang="en" href="/WAI/tutorials/page-structure/example/" class="page-link"><span>Full Example</span></a></li></ul></li><li> <a lang="en" href="/WAI/tutorials/menus/" class="page-link"><span>Menus</span></a><ul><li> <a lang="en" href="/WAI/tutorials/menus/structure/" class="page-link"><span>Structure</span></a></li><li> <a lang="en" href="/WAI/tutorials/menus/styling/" class="page-link"><span>Styling</span></a></li><li> <a lang="en" href="/WAI/tutorials/menus/flyout/" class="page-link"><span>Fly-Out Menus</span></a></li><li> <a lang="en" href="/WAI/tutorials/menus/application-menus/" class="page-link"><span>Application Menus</span></a></li><li> <a lang="en" href="/WAI/tutorials/menus/application-menus-code/" class="page-link"><span>Application Menu Example & Code</span></a></li></ul></li><li> <a lang="en" href="/WAI/tutorials/images/" aria-current="location" class="page-link"><span>Images</span></a><ul><li> <a lang="en" href="/WAI/tutorials/images/informative/" class="page-link"><span>Informative Images</span></a></li><li> <a lang="en" href="/WAI/tutorials/images/decorative/" class="page-link"><span>Decorative Images</span></a></li><li> <a lang="en" href="/WAI/tutorials/images/functional/" class="page-link"><span>Functional Images</span></a></li><li> <a lang="en" href="/WAI/tutorials/images/textual/" class="page-link"><span>Images of Text</span></a></li><li> <a lang="en" href="/WAI/tutorials/images/complex/" class="page-link"><span>Complex Images</span></a></li><li> <a lang="en" href="/WAI/tutorials/images/groups/" class="page-link"><span>Groups of Images</span></a></li><li> <a lang="en" href="/WAI/tutorials/images/imagemap/" class="page-link"><span>Image Maps</span></a></li><li> <a lang="en" href="/WAI/tutorials/images/decision-tree/" class="page-link"><span>An <code style="color: inherit;">alt</code> Decision Tree</span></a></li> <li> <a lang="en" href="/WAI/tutorials/images/tips/" aria-current="page" class="page-link"><span>Tips and Tricks</span></a></li></ul></li><li> <a lang="en" href="/WAI/tutorials/tables/" class="page-link"><span>Tables</span></a><ul><li> <a lang="en" href="/WAI/tutorials/tables/one-header/" class="page-link"><span>One Header</span></a></li><li> <a lang="en" href="/WAI/tutorials/tables/two-headers/" class="page-link"><span>Two Headers</span></a></li><li> <a lang="en" href="/WAI/tutorials/tables/irregular/" class="page-link"><span>Irregular Headers</span></a></li><li> <a lang="en" href="/WAI/tutorials/tables/multi-level/" class="page-link"><span>Multi-level Headers</span></a></li><li> <a lang="en" href="/WAI/tutorials/tables/caption-summary/" class="page-link"><span>Caption & Summary</span></a></li><li> <a lang="en" href="/WAI/tutorials/tables/tips/" class="page-link"><span>Tips and Tricks</span></a></li></ul></li><li> <a lang="en" href="/WAI/tutorials/forms/" class="page-link"><span>Forms</span></a><ul><li> <a lang="en" href="/WAI/tutorials/forms/labels/" class="page-link"><span>Labeling Controls</span></a></li><li> <a lang="en" href="/WAI/tutorials/forms/grouping/" class="page-link"><span>Grouping Controls</span></a></li><li> <a lang="en" href="/WAI/tutorials/forms/instructions/" class="page-link"><span>Form Instructions</span></a></li><li> <a lang="en" href="/WAI/tutorials/forms/validation/" class="page-link"><span>Validating Input</span></a></li><li> <a lang="en" href="/WAI/tutorials/forms/notifications/" class="page-link"><span>User Notifications</span></a></li><li> <a lang="en" href="/WAI/tutorials/forms/multi-page/" class="page-link"><span>Multi-page Forms</span></a></li><li> <a lang="en" href="/WAI/tutorials/forms/custom-controls/" class="page-link"><span>Custom Controls</span></a></li></ul></li><li> <a lang="en" href="/WAI/tutorials/carousels/" class="page-link"><span>Carousels</span></a><ul><li> <a lang="en" href="/WAI/tutorials/carousels/structure/" class="page-link"><span>Structure</span></a></li><li> <a lang="en" href="/WAI/tutorials/carousels/functionality/" class="page-link"><span>Functionality</span></a></li><li> <a lang="en" href="/WAI/tutorials/carousels/animations/" class="page-link"><span>Animations</span></a></li><li> <a lang="en" href="/WAI/tutorials/carousels/styling/" class="page-link"><span>Styling</span></a></li><li> <a lang="en" href="/WAI/tutorials/carousels/working-example/" class="page-link"><span>Working Example</span></a></li><li> <a lang="en" href="/WAI/tutorials/carousels/full-code/" class="page-link"><span>Complete Code</span></a></li></ul></li></ul></li></ul></nav> </div> <main id="main" lang="en"> <header class="in-resource"> <h1> Tips and Tricks </h1><p>in <a lang="en" href="/WAI/tutorials/images/"><span>Images Tutorial</span></a></p></header> <ul> <li> <p><strong>Choosing appropriate text alternatives:</strong> <br /> Imagine that you’re reading the web page aloud over the phone to someone who needs to understand the page. This should help you decide what (if any) information or function the images have. If they appear to have no informative value and aren’t links or buttons, it’s probably safe to treat them as <a href="/WAI/tutorials/images/decorative/">decorative</a>.</p> </li> <li> <p><strong>Prioritize information in text alternative:</strong> <br /> Aim to put the most important information at the beginning.</p> </li> <li> <p><strong>Length of the text alternative:</strong> <br /> The <code class="language-plaintext highlighter-rouge">alt</code> text should be the most concise description possible of the image’s purpose. If anything more than a short phrase or sentence is needed, it would be better to use one of the long description methods discussed in <a href="/WAI/tutorials/images/complex/">complex images</a>.</p> </li> <li> <p><strong>Responsive design:</strong> <br /> Icons with text labels will often drop the text labels when viewed on smaller screens. Ensure that icons are readable at that size, understandable without text, and have text descriptions.</p> </li> <li> <p><strong>Punctuation within <code class="language-plaintext highlighter-rouge">alt</code> attributes:</strong></p> <ul> <li> <p>As for any text, using punctuation in the text alternative makes the information easier to understand. In particular, remember to add space characters in the <code class="language-plaintext highlighter-rouge">alt</code> text when there’s no space character between the image and adjacent text, to avoid having words running together when they are read by a screen reader.</p> </li> <li> <p>If you use a null (empty) text alternative (<code class="language-plaintext highlighter-rouge">alt=""</code>) to hide decorative images, make sure that there is no space character in between the quotes. If a space character is present, the image may not be effectively hidden from assistive technologies. For instance, some screen readers will still announce the presence of an image if a space character is put between the quotes.</p> </li> </ul> </li> <li> <p><strong>Superfluous information in the text alternative:</strong> <br /> Usually, there’s no need to include words like “image”, “icon”, or “picture” in the alt text. People who can see will know this already, and screen readers announce the presence of an image. In some situations, it may be important to distinguish between paintings, photographs, or illustrations, etc., but it’s best to avoid the more generic use of the terms.</p> </li> <li> <p><strong>SVG graphics:</strong></p> <ul> <li> <p>SVG graphics can be referenced in the <code class="language-plaintext highlighter-rouge">src</code> attribute of an <code class="language-plaintext highlighter-rouge"><img></code> element like other image formats (PNG, JPEG, GIF). In this case, the examples of this tutorial can be used with SVG as well.</p> </li> <li> <p>As SVG images consist of tags like HTML, their code can also be used in HTML5 directly. In this case you can provide a text alternative in a <code class="language-plaintext highlighter-rouge"><title></code> element within the SVG image. To improve accessibility support, that title should be referenced from an <code class="language-plaintext highlighter-rouge">aria-labelledby</code> attribute of the <code class="language-plaintext highlighter-rouge"><svg></code> element, for example:</p> </li> </ul> <p><code class="language-plaintext highlighter-rouge"><svg aria-labelledby="svgtitle1"> <title id="svgtitle1">Settings</title> [other svg code] </svg></code></p> </li> <li> <p><strong>Logos:</strong> <br /> Logo images with text are exempt from some of the accessibility requirements. For instance, there is no minimum contrast requirement.</p> </li> </ul> <h2 id="other-w3c-resources">Other W3C Resources</h2> <ul> <li>Background information on <a href="/WAI/fundamentals/accessibility-principles/#alternatives">providing text alternatives for non-text content</a> in How People with Disabilities Use the Web.</li> <li>Test the accessibility of images on your site: <a href="/WAI/test-evaluate/preliminary/#images">Quick Checks Image text alternatives</a>.</li> <li>Examples of good and bad practice in selecting text alternatives can be found in the <a href="https://www.w3.org/WAI/demos/bad/">Before and After Demonstration</a> (BAD).</li> </ul> <nav class="pager" aria-label="Previous/Next Page" style="clear: both;"> <ul><li class="pager--item previous"> <a href="/WAI/tutorials/images/decision-tree/"> <svg focusable="false" aria-hidden="true" class="icon-arrow-left pager--item-icon"><use xlink:href="/WAI/assets/images/icons.svg#icon-arrow-left"></use></svg> <span class="pager--item-text"> <span class="pager--item-text-direction">Previous:</span> <span class="pager--item-text-target">An alt Decision Tree</span> </span> </a> </li></nav><aside class="box box-icon box-space-above" id="helpimprove" aria-label="feedback"><header class="box-h box-h-icon box-h-space-above box-h-icon"> <svg focusable="false" aria-hidden="true" class="icon-comments "><use xlink:href="/WAI/assets/images/icons.svg#icon-comments"></use></svg> <h2> Help improve this page </h2></header><div class="box-i"><p>Please share your ideas, suggestions, or comments via e-mail to the publicly-archived list <a href="mailto:wai@w3.org?body=%5Binclude%20a%20relevant%20email%20Subject%5D%0A%0A%5Bput%20comment%20here...%5D%0A%0AI%20give%20permission%20to%20share%20this%20to%20a%20publicly-archived%20e-mail%20list.">wai@w3.org</a> or via GitHub.</p> <div class="button-group"> <a href="mailto:wai@w3.org?body=%5Binclude%20a%20relevant%20email%20Subject%5D%0A%0A%5Bput%20comment%20here...%5D%0A%0AI%20give%20permission%20to%20share%20this%20to%20a%20publicly-archived%20e-mail%20list." class="button"><span>E-mail</span></a><a href=" https://github.com/w3c/wai-website/edit/main/pages/design-develop/tutorials/images/tips.md " class="button"><span>Fork & Edit on GitHub</span></a><a href="https://github.com/w3c/wai-website/issues/new?template=content-issue.yml&wai-resource-id=wai-tutorials&wai-url=https://www.w3.org/WAI/tutorials/images/tips/" class="button"><span>New GitHub Issue</span></a></div></div></aside> <a class="button button-backtotop" href="#top"><span><svg focusable="false" aria-hidden="true" class="icon-arrow-up "><use xlink:href="/WAI/assets/images/icons.svg#icon-arrow-up"></use></svg> Back to Top</span></a> </main> </div> <footer id="wai-site-footer" class="page-footer default-grid" aria-label="Page"> <div class="inner"> <div><strong>Status:</strong> Updated 16 July 2024 </div> <div> Editors: <ul class="sentence"> <li><a href="https://www.w3.org/People/yatil/">Eric Eggert</a></li> <li><a href="https://www.w3.org/People/shadi/">Shadi Abou-Zahra</a></li> </ul>   Update Editor: <ul class="sentence"> <li>Brian Elton</li> </ul>   Contributors: <ul class="sentence"> <li>see <a href="/WAI/tutorials/acknowledgements/">Acknowledgements</a></li> </ul> </div> <p>Developed by the Education and Outreach Working Group (<a href="https://www.w3.org/groups/wg/eowg">EOWG</a>). Developed with support from the <a href="https://www.w3.org/WAI/ACT/">WAI-ACT project</a>, co-funded by the <strong>European Commission <abbr title="Information Society Technologies">IST</abbr> Programme</strong>.</p> </div> </footer><footer class="site-footer grid-4q" aria-label="Site"> <div class="q1-start q3-end about"> <div> <p><a class="largelink" href="https://www.w3.org/WAI/" lang="en" dir="auto" translate="no">W3C Web Accessibility Initiative (WAI)</a></p> <p>Strategies, standards, and supporting resources to make the Web accessible to people with disabilities.</p> </div> <div class="social" lang="en" dir="auto" translate="no"> <ul> <li><a href="https://w3c.social/@wai"><svg focusable="false" aria-hidden="true" class="icon-mastodon "><use xlink:href="/WAI/assets/images/icons.svg#icon-mastodon"></use></svg> Mastodon</a></li> <li><a href="https://www.linkedin.com/company/w3c-wai/"><svg focusable="false" aria-hidden="true" class="icon-linkedin "><use xlink:href="/WAI/assets/images/icons.svg#icon-linkedin"></use></svg> LinkedIn</a></li> <li><a href="https://www.w3.org/WAI/feed.xml"><svg focusable="false" aria-hidden="true" class="icon-rss "><use xlink:href="/WAI/assets/images/icons.svg#icon-rss"></use></svg> Feed</a></li> <li><a href="https://www.youtube.com/channel/UCU6ljj3m1fglIPjSjs2DpRA/playlists/"><svg focusable="false" aria-hidden="true" class="icon-youtube "><use xlink:href="/WAI/assets/images/icons.svg#icon-youtube"></use></svg> YouTube</a></li> <li><a href="https://www.w3.org/WAI/news/subscribe/" class="button">Get News in Email</a></li> </ul> </div> <div lang="en" dir="auto" translate="no"> <p>Copyright © 2024 World Wide Web Consortium (<a href="https://www.w3.org/">W3C</a><sup>®</sup>). 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