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. Completing the Romanian picture, we find that other energy sources make up the remaining 2%.”. Both should be written with the user in mind but alt text is the main source of information about what’s in the image. It might sound obvious, but an alt-text should describe the image. See the Pen Alt text can be quite useful and should be incorporated into your SEO efforts for a number of reasons. This includes screen readers For example, images that are fancy rendered text typically ("New!" When writing alt text, consider what details the author thought was most important. Screen readers will read the alt text out loud, as well as image descriptions, depending on what settings the user has enabled. You can experiment with CSS text styling in this code editor, using the above rules as a starting point. Listening to a web page with a screen reader takes a lot longer than traditional methods, so don’t make the surfing experience painful for screen reader users with bloated and unnecessary ALT text. Alt text, also known as alternative text or alt tag, is a short description of the image that displays when a user can’t access the image. If the image requires a lengthier description, it is better to describe the image in the content and provide a short alt text. It also displays on the page if the image fails to load, as in this example of a missing image. Only in extreme circumstances, such as when a logo is used, should you provide an image of text rather than text. 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. In this case, the alternative text should say something like "Harvard University logo.". It should convey the purpose of the image, not describe the image. If someone went on your website or profile with their eyes closed, would they still be able to find their way around? Harvard Stadium with cracked concrete pillars. Some people might prefer information provided in text, or video, or audio; and their accessibility needs can also influence their preferences. In addition, text that’s inside an image isn’t translatable into different languages, selectable for copy/paste, or resizable without degrading its quality. Write the text as text in the editor and let the publishing system apply styling. If the image is a photograph, the alternate text should describe the photograph. According to the most recent statistics available to us, we see that hydro-electric power is the most prevalent source at slightly over one third (36%), followed closely by coal (33%), then nuclear (19%), and gas at 10%. In most cases, an image will only have a function if it is contained within a link (or is an image map hotspot or a button). Best alt text: alt="A stack of pancakes on a plate with banana, walnuts and honey"> Alt text, since it’s what appears if the image doesn’t display, should be as descriptive as possible. 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. Image alt text For example, automatic alt text once interpreted a picture of my brother standing outside as being a picture of a car. 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). alt and title attributes of an image are commonly referred to as alt tag A screen reader would identify that the image is also a link and say, "Harvard University homepage, link.". When composing image descriptions, it may seem difficult to decide what to include. Each decorative image should have an alternative text attribute with an empty string (alt=""). If you’re a developer and you’re implementing UI with images based on something created by a content creator or a designer, you should NOT be responsible for writing the alt text – alt text should have been written by the time it gets to you. Image descriptions can be longer, but I recommend keeping them the length of a tweet, or about 280 characters. Search engines also index alt text information and consider it a factor when determining search engine ratings. The simple answer is: if you created the image, you should write the alt text. Read on to learn more about how to create alt text and image descriptions. But, also keep it short–125 characters or less is a good guideline. Alt text is also useful for images with decorative text that may be difficult to see, like a signature or logo. Do all linked images meaningfully describe their action rather than their appearance. Consult the content editor slides at the top of the page for more examples.Some other best practices include: 1. 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. Also called "alt tags" and "alt descriptions," alt text is the written copy that appears in place of an image on a webpage if the image fails to load on a user's screen. Analysis of media coverage during the Iraq war was by no means universally objective. When the object is an image, it is scaled. For instance, we might want to write "Welcome to Harvard University" using the logo instead of the words "Harvard University." As more and more people develop vision impairments, they turn to assistive technology in order to access content- read more about this in my World Sight Day 2017 post here. Alt text should clearly describe the beginning point, progress, and conclusion of flow charts. on CodePen. This text helps screen-reading tools describe images to visually impaired readers and allows search engines to better crawl and rank your website. Both provide a description of the image and context of how the image fits in with the rest of the content. There are three main reasons why you should be using alt text. 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. But for complex graphics, it's not enough to provide a screen reader user with only short alternative text, such as "population graph." The alt text only appears in the source code of your website, as a line of HTML code also known as the alt attribute. 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. And by placing this paragraph first, we make sure screen reader users can still get the information they need. 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. Here, we find an interesting picture, where electricity is provided by diverse energy sources, with no single energy source constituting a clear majority. 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. According to W3C Accessibility Guidelines, for code to be considered W3C-valid, it is important to include both image alt text and image title text in the image for important images … Imagine that some prose has been provided to describe—in this case—the division of energy sources for Romania’s electricity production: “When we consider energy consumption trends farther east in Europe, however, we might consider the Carpathian nation of Romania as an example. So if you have 4 images of the same camera strap on the page, the alt text could be: When the content presented in an image is conveyed elsewhere, such as in a caption, the image may also be given empty alt text. A picture may be worth a thousand words, but there’s no reason to write them all out and leave the user waiting for the descriptions to end. gives more details than alt text and allows someone to learn more about what is in an image that goes beyond alt text In visual browsers such as Firefox, the ALT text is displayed whe… The developer’s responsibility is to make sure the alt text is implement… Example 2: The purpose of this image is … By adding alt text and image descriptions, barriers are lifted and more people can access your content. Alt text and captions are similar in many ways. Alt text tells people what is in an image, such as text or basic essential details. If an image has text in it, make sure to write out the image text verbatim as alt 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 with complex information: If the image is a chart… Alt tags should accurately describe an image so Google can determine what the image on your website is depicting. It never hurts to double check alt text and make sure that both the computer and humans are in agreement as to what is in the picture. I still recommend typing “null” as alt text for decorative images as opposed to leaving it blank. Here are the steps to crafting fabulous alt-texts! ALT text is accessed by screen reader users to provide them with a text equivalent of images. The alt text for the image should still describe the general content of the image. If an image fails to load, alt text will display in its place. ALT tags are often misused, mostly people overuse them. It is strongly recommended that alt text be 125 characters or less to ensure compatibility for popular screen readers. 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 … 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. Let's look at some examples of appropriate alternative text, using the same Harvard University logo in different contexts. It is read aloud to users by screen reader software, and it is indexed by search engines. Skip to content Neutral coverage came in at 26%, while a minority of sources were determined to be anti-war. The alt attribute provides alternative information for an image if a user for some reason cannot view it (because of slow connection, an error … There does not need to be a high level of detail in the description. So wherever possible, use text along with CSS to apply styling (such as color, typeface, or size). User agents should do their best to scale an object or image to match. Definition and Usage The required alt attribute specifies an alternate text for an image, if the image cannot be displayed. 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. “Search the Card Catalog" is much more useful than "Photo of a collection of books and other reading materials scattered on a library table". 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. Alt text, or “alternative text” as the long-form name suggests, is a In this basic example, we’re just using the Harvard logo to indicate that the page is associated with Harvard University. You must provide information for that image that takes into account its purpose and also the surrounding text on the page. In rare occasions, an image of text might be used inline as a substitute for text. Twitter users can add alt text by enabling these settings here. 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. With these tips, users can create alt text and image descriptions that help people with vision impairments and make their content more inclusive and accessible. Remember, ALT text should describe the content of the image and nothing more. To learn more about creating high-resolution images, read my post on high-resolution images here. For simple graphics, providing a succinct, informative text alternative is usually fine. Keep it short and descriptive, like a tweet. While this is an awesome feature, it isn’t always the most accurate. What is alt text? 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). 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. This includes for people with reading difficulties. 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.”. 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". 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. CSS text styling by HUIT - Web, UX and Digital Accessibility Services (@hwpdas) 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. Describe the function of the image, especially if the image is a link. And of course, alt text should be added when creating content Microsoft Office- read more about adding alt text in Microsoft Word here, adding alt text in PowerPoint presentations here, and creating screen reader-friendly presentations in Microsoft Sway here. Most important can ( or like to ) consume information, especially in educational contexts content. Captions the alt text of an image should describe visible to anyone accessing the page is associated with Harvard University logo. `` say ``! 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