While there are no hard and fast rules for determining what alternative text should say (it depends on the image, its context, the intent of the author, etc.), one simple trick is to imagine describing the image to someone over the phone.
If the body of the document already contains a sufficiently detailed description in close proximity to the image, the alternative text can simply identify the image so that the reader knows when it is being referred to. Images used for purely decorative purposes (i.e., those that do not provide any meaningful information) should not have alternative text. Alternative text should provide sufficient information so that users who are unable to see them are still able to understand what they convey. This descriptive text should be limited to 120 characters for simple images, while the alternative text for graphs, tables, and complex images (such as detailed maps and diagrams) should give a brief summary of the included information. In this tutorial, the accessibility features of InDesign will be covered through:Īlternative text for images, charts, graphs, and tables is vital to ensuring that users with visual impairments have access to information included in these visuals. This tutorial was developed for InDesign CS6, although other versions may share functionality. This tutorial will walk users with InDesign through the use of these features. InDesign has a number of tools available to the user to make the content they create accessible. We will discuss this in the next section to help InDesign users who are having problems in opening PDF files on the program.Creating Accessible InDesign Content Introduction This just means that there should be ways for us to open this kind of file successfully. The important thing here is that we have known that Portable Document Format or PDF is actually supported by InDesign. Joint Photographic Experts Group (JPG, JPEG) Below are some of the files that are supported by InDesign. It is important to know what kinds of file the program supports so you will determine which ones you can open on it. Part 1: File Formats Supported By InDesign
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