To use a diagram, there must be a clear user need to visualise a complicated process with multiple elements that relate to each other. Ask yourself whether this need can be met with clearly written text rather than a diagram.

Consider the following:

• what is the message you would be trying to communicate with a diagram?
• are you trying to communicate too much information in one diagram?

By explaining the message as succinctly as possible in the text rather than using an image, you can avoid duplicating content and ensure the website is accessible for everyone.

If you are unsure whether a diagram would meet your users’ needs, contact content.design@ons.gov.uk for guidance.