Evaluation and Improvement of Web Information System Accessibility with Markup Language Possibilities

Markup languages are used to describe the content published in the World Wide Web. Aim of this article is to analyze hypertext markup language versions and identify possibilities of improvement accessibility for the web information systems with markup language elements appropriate application. Analysis of the document structure is performed. Document structure and text description elements are selected. Selected elements are practically evaluated with screen readers. From the evaluation results, it can be seen that markup language possibilities for accessibility improvement can be significant.