ISO/IEC 20071-11 gives guidance on how to create text alternatives, and what information to put in text alternatives. ISO/IEC 20071-11 applies to all static images that are used in any type of electronic document. It also applies to individual images within a slide show.
While text alternatives can be implemented via various mechanisms in various types of electronic documents, the contents of ISO/IEC 20071-11 are not dependent on the choice of implementation mechanism or of the electronic document type. Guidance on making moving images accessible is contained in ISO/IEC TS 20071-21, ISO/IEC 20071-23, and ISO/IEC 20071-25.
ISO/IEC 20071-11 on information technology, user interface component accessibility is useful for:
Text alternatives help people who cannot see the images to understand what the image is of or the purpose it serves by providing the same information in textual form. Text alternatives can be useful to those with visual impairments, those who turned images off in order to improve webpage loading speeds, and those who cannot understand the image being displayed. They can also aid search engines in finding images.
ISO/IEC 20071-11 provides guidance for user interface, web, and document developers to help them create informative descriptions for various types of illustrations. ISO/IEC 20071-11 provides guidance intended to help developers create equitable text alternatives. The guidance contained in ISO/IEC 20071-11 is intended to be used by the person who creates content, and/ or text alternatives to be placed in an electronic document.
BS ISO/IEC 20071-11:2019 supersedes ISO/IEC TS 20071-11:2012 which has been withdrawn. BS ISO/IEC 20071-11:2019 includes some technical changes with respect to ISO/IEC TS 20071-11:2012. These include:
ISO/IEC 20071-11