Data conveyed as a graph can be either an image or an interactive part of a webpage.

For both of these, achieving accessibility means paying attention to:

• the visual presentation, to ensure that users with vision impairment can understand the information presented

• alternative presentation of the data, to ensure that users with other disabilities have other ways to access the information – this may be through alt text or by including the data table used to construct the graph.

See Showing for more information about how to present graphs clearly and accurately.

This section covers:

• Colour and contrast for graphs
• Writing alt text for graphs
• Including the data table
• HTML5, Javascript and plugins for graphs
• Additional resources for graph accessibility.