Many countries have legislation requiring web site accessibility. In the UK, legal action has been taken against web service providers under the Disability Discrimination Act Code of Practice that requires “reasonable adjustments” to make web site services accessible to disabled users.
W3C has a detailed accessibility checklist with 3 priorities:
(c) W3C (MIT, INRIA, Keio) 2001/01
Automated checkers such as Bobby are useful to eliminate straightforward errors, but guidelines related to meaning still need manual inspection.
Updated July 2003 by Nigel Bevan and Arlene Kline©UsabilityNet 2006. Reproduction permitted provided the source is acknowledged.