Research Report on Web Accessibility Metrics | Accessibilité numérique |

1. Introduction

The W3C/WAI Web Content Accessibility Guidelines (WCAG) and other WAI guidelines provide discrete conformance levels "A", "AA", and "AAA" to measure the level of accessibility. In many cases more granular scores would help provide a more precise indication on the level of accessibility. However, identifying valid, reliable, sensitive, adequate, and computable metrics that produce such scores is a non-trivial task with several challenges. This research report explores the qualities that such metrics need to demonstrate based on input from an Online Symposium on Website Accessibility Metrics held on 5 December 2011.