![]() 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. 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: ![]() If you do this, you'll need to provide that same text as the image’s text alternative so that screen-reader users can access the text. Only in extreme circumstances, such as when a logo is used, should you provide an image of text rather than text. If you feel that you need text that deviates from the style, formatting options provided by online content editors should allow you to update the style for that text. If you use an online content editor to write content, the styling will happen automatically. So wherever possible, use text along with CSS to apply styling (such as color, typeface, or size). Some people with reading difficulties or visual impairments need to customize the display of text to make it easier to read. When text is presented as an image of text, that limits their ability to change the appearance of that text. Only 3% of American sources fell into that category. Neutral coverage came in at 26%, while a minority of sources were determined to be anti-war. In fact, it's clear that coverage was overall pro-war with American news sources being slightly more pro-war than sources from outside the US. And by placing this paragraph first, we make sure screen reader users can still get the information they need.Īnalysis of media coverage during the Iraq war was by no means universally objective. 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. 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. But for complex graphics, it's not enough to provide a screen reader user with only short alternative text, such as "population graph." You also need to think about the information that the graphic conveys, such as the categories of data being shown, trends, and maximum and minimum values. For people who use screen readers, a good text equivalent of the information that’s presented graphically is essential for their understanding.įor simple graphics, providing a succinct, informative text alternative is usually fine. Some people understand complex information best when it's presented visually, such as as a chart or diagram, while others find that reading the information suits them better. Guidelines for writing alt text on social media (HarvardKey required).Example of an accessible infographic (WebAIM).Understanding SC 1.1.1-Non-text Content (WAI).Making Images Accessible (a collection of resources from the DIAGRAM Center for describing complex images).Accessibility: Image Alt text best practices (Siteimprove).Does the page make sense with the images hidden, replaced by their text alternatives?ĭo all linked images meaningfully describe their action rather than their appearance? Use one of the testing tools to hide images and display their alt text. See an example of an accessible infographic from WebAIM. Images with complex information: If the image is a chart, diagram, or illustration, consider how to convey the information contained in the image using both the alt-text and the adjacent page text. 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 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). 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” Harvard Stadium with cracked concrete pillars. Harvard Stadium with two lone runners bounding up the steps.Īlt-text on page about renovation projects: It's not necessary to add text in the Title field.Įxample of Alt Text with Various ContextsĪlt-text on a page about recent turnout for track tryouts: Leave alt text blank if the image is purely decorative Keep it short and descriptive, like a tweet. It also displays on the page if the image fails to load, as in this example of a missing image. It is read aloud to users by screen reader software, and it is indexed by search engines. Alternative (Alt) Text is meant to convey the “why” of the image as it relates to the content of a document or webpage. ![]()
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