Alt text should clearly describe the beginning point, progress, and conclusion of flow charts. Behind the scenes, the text will be styled using web fonts and CSS properties such as background, text-shadow and color. We wouldn't want a screen reader announcing, "Welcome to the Harvard University logo"! CSS text styling by HUIT - Web, UX and Digital Accessibility Services (@hwpdas) While this is an awesome feature, it isn’t always the most accurate. Example 2: The purpose of this image is … When the object is an image, it is scaled. Both provide a description of the image and context of how the image fits in with the rest of the content. For example, the alt text for an image of a question mark that links to a help page should be “Contact Support” rather than “question mark.”. When composing image descriptions, it may seem difficult to decide what to include. But why not setting the aria-label on the a element, then we can still have the image description on the img 's alt ? Always provide alt text for images that are links. However, alt text is typically “behind the scenes,” whereas captions are visible to anyone accessing the page. In this example, we're going to provide a text alternative for a graph, using HTML to give an alt attribute to the graph and some visible text to provide additional information. The accessibility of the web in general would increase dramatically if alternate attribute were provided and implemented correctly. You can experiment with CSS text styling in this code editor, using the above rules as a starting point. If the content that the image conveys is presented within text in the surrounding context of the image, then an empty alt attribute may suffice. Let’s create the perfect alt-text! Only in extreme circumstances, such as when a logo is used, should you provide an image of text rather than text. If you didn’t create the image but you are the first to include it in a wireframe or mockup or prototype, you should write the alt text. Harvard Stadium with cracked concrete pillars. “Search the Card Catalog" is much more useful than "Photo of a collection of books and other reading materials scattered on a library table". Speaking of Twitter, read my post on low vision Twitter accounts to follow here, and follow me on Twitter @veron4ica here. However, any time an image is the only content within a link, the image MUST be given alternative text that presents the function of that link. I… For example, the alt text for an image of a question mark that links to a help page should be “Contact Support” rather than “question mark.” Images with complex information: If the image is a chart… The most appropriate alternative text for an image depends very much on the context of the image in question. In this case, we should focus on writing alternative text that stands in for the visible text within the logo, without adding any extraneous information—that is, you’d want the alternative text to just say "Harvard University". In keeping with other Internet guidelines, the term " alt text" (in a code font) is used here to refer to the text supplied for the image alt parameter and which generates text for the HTML alt attribute; the term "alternative text" refers to the text equivalent for an image, regardless of where that text resides. Here, we find an interesting picture, where electricity is provided by diverse energy sources, with no single energy source constituting a clear majority. Here are features that can be included in image descriptions- write about these when applicable: Likewise, there are some things that should be left out of image descriptions. Remember, ALT text should describe the content of the image and nothing more. This text helps screen-reading tools describe images to visually impaired readers and allows search engines to better crawl and rank your website. It should be brief: less than 250 characters. In a WYSIWYG editor, it is possible to upload an image of some text (let's say, "delicious pancakes") and insert it into the page with alternative text that matches the text exactly: One disadvantage here is that screen readers will, in some contexts, read the alternative text with "graphic" appended, and you might not want the user to know that the text is really an image. Automatic alt text is being integrated into different websites. For example, if the image below of King Henry VIII of England were used in an article about the history of the Royal family of … Image alt text By providing a doughnut chart to capture the salient points, we can be more inclusive of those who learn better visually and assist the understanding of everyone: Seeing the percentages visually, as segments, makes the proportions easier to compare. For example: By adding alt text and image descriptions, barriers are lifted and more people can access your content. The first step when determining appropriate alternative text for an image is to decide if the image presents content and if the image has a function. Each decorative image should have an alternative text attribute with an empty string (alt=""). For example an image with a caption below it does not need alt text that matches the caption, leave the alt text blank to avoid redundancy. For instance, we might want to write "Welcome to Harvard University" using the logo instead of the words "Harvard University." The alternative text for the graph (supplied through its alt attribute, which you can add when you upload a graphic using a web editor) would be too long if it were to describe everything in the graph, so it just describes the graph's purpose. Understanding what makes good alt text is subtle and important. For simple graphics, providing a succinct, informative text alternative is usually fine. Only 3% of American sources fell into that category. ALT text is accessed by screen reader users to provide them with a text equivalent of images. Alternate Text Suggestions. Image titles and alt texts are both attributes in an image tag that describe the content of that image. User agents should do their best to scale an object or image to match. If an image has text in it, make sure to write out the image text verbatim as alt text. Neutral coverage came in at 26%, while a minority of sources were determined to be anti-war. In this case, we would use alternative text that describes the action of the link. gives more details than alt text and allows someone to learn more about what is in an image that goes beyond alt text The alt text only appears in the source code of your website, as a line of HTML code also known as the alt attribute. BEST PRACTICE: Remember, ALT text is needed for those that may not be able to see an image; you should not just use the file name – it needs to describe what the image is. Let's look at some examples of appropriate alternative text, using the same Harvard University logo in different contexts. People differ in the way that they can (or like to) consume information, especially in educational contexts. There does not need to be a high level of detail in the description. You must provide information for that image that takes into account its purpose and also the surrounding text on the page. Alt text can be quite useful and should be incorporated into your SEO efforts for a number of reasons. But if the logo were provided as an example of logo design, we might want to go further and opt for something like "Harvard University logo, featuring black, serif text and a red shield emblem", as in this example: It's a web-design convention to use a logo graphic as a link back to a site's home page. Think of the alt tag as the text that a visually impaired person might see or what would display should a visitor have images turned off in the browser. Use proper spelling, capitalization, spacing, and grammar too- if someone is pinning the image to Pinterest, the alt text is what will display as the image description. When writing alt text, consider what details the author thought was most important. All of the guidelines of WCAG and some related articles suggest to always set the alt attribute on the img elements, if the image links to other page, alt should be the place the image leads to. What is alt text? In rare occasions, an image of text might be used inline as a substitute for text. Decorative images should be given empty or null alt text. The developer’s responsibility is to make sure the alt text is implement… on CodePen. Completing the Romanian picture, we find that other energy sources make up the remaining 2%.”. There are three main reasons why you should be using alt text. All the correct information is there, but it’s hidden among a lot of unnecessary verbosity. When the content presented in an image is conveyed elsewhere, such as in a caption, the image may also be given empty alt text. The ALT text adds a text description to an image on a Web page, and should be used for all images, graphical bullets, and graphical horizontal rules. Do also be sure also to keep ALT text as short and succinct as possible. There’s all sorts of … Consult the content editor slides at the top of the page for more examples.Some other best practices include: 1. Alt text tells people what is in an image, such as text or basic essential details. Icons: alt text for icons should be the equivalent to the information intended by the icon, such as “Download PDF” or “Visit our Facebook Page” Images as Links: If the image is being used to link to another page, the alt text should describe what will happen when the image is clicked (rather than what it looks like). But while accessibility for images often focuses on providing a text alternative for screen-reader users, we can also look at the issue from the other way around—providing a graphic alternative for text to make the underlying information or concept easier to understand. Alternative text, or “alt text” describes the content of images, graphs and charts. 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