Anyone accessing via a telephone and modem who is paying for downloading files may switch off graphics to reduce cost. Blind and sight impaired users who are using screen readers will not be able to 'see' the graphic unless it is described in text. There are two ways of making sure everyone is able to understand the graphic. Where pictures or diagrams are used the short ALT tag is useful but it may also be necessary to provide a fuller text description created as a link nearby. There are now compression programs available to reduce the size of graphics files and it may be worth investigating their use to help users who are paying for time to download files.
Some people use the browser Lynx which handles only text.
Forms Forms are being used to increase the interactivity of web pages. Users are encouraged to answer questions, respond to surveys, order products or samples and do assessments. The user moves the pointer to a box and types their answer and then 'clicks' on the submit button. Forms are very difficult to access for those not using Windows browsers with a mouse or other pointing device. Remember to provide a text description and email address as well.