Barriers to use: usability and content accessibility on the Web's most popular sites
CUU '00 Proceedings on the 2000 conference on Universal Usability
Contextual web accessibility - maximizing the benefit of accessibility guidelines
W4A '06 Proceedings of the 2006 international cross-disciplinary workshop on Web accessibility (W4A): Building the mobile web: rediscovering accessibility?
Quantitative metrics for measuring web accessibility
W4A '07 Proceedings of the 2007 international cross-disciplinary conference on Web accessibility (W4A)
Foundations and Trends in Web Science
Effects of sampling methods on web accessibility evaluations
Proceedings of the 9th international ACM SIGACCESS conference on Computers and accessibility
An evaluation of web accessibility metrics based on their attributes
Proceedings of the 26th annual ACM international conference on Design of communication
How much does expertise matter?: a barrier walkthrough study with experts and non-experts
Proceedings of the 11th international ACM SIGACCESS conference on Computers and accessibility
On web accessibility evaluation environments
Proceedings of the International Cross-Disciplinary Conference on Web Accessibility
An architecture for multiple web accessibility evaluation environments
UAHCI'11 Proceedings of the 6th international conference on Universal access in human-computer interaction: design for all and eInclusion - Volume Part I
The interplay between web aesthetics and accessibility
The proceedings of the 13th international ACM SIGACCESS conference on Computers and accessibility
Monitoring accessibility: large scale evaluations at a Geo political level
The proceedings of the 13th international ACM SIGACCESS conference on Computers and accessibility
Approaching web accessibility through the browser: automatically applying aria attributes
Proceedings of the 1st ACM SIGPLAN international workshop on Programming language and systems technologies for internet clients
Experienced barriers in web applications and their comparison to the WCAG guidelines
USAB'11 Proceedings of the 7th conference on Workgroup Human-Computer Interaction and Usability Engineering of the Austrian Computer Society: information Quality in e-Health
An intuitive accessible web automation user interface
Proceedings of the International Cross-Disciplinary Conference on Web Accessibility
Guidelines are only half of the story: accessibility problems encountered by blind users on the web
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Assessing the effort of repairing the accessibility of web sites
ICCHP'12 Proceedings of the 13th international conference on Computers Helping People with Special Needs - Volume Part I
Proceedings of the 10th International Cross-Disciplinary Conference on Web Accessibility
Dynamic injection of WAI-ARIA into web content
Proceedings of the 10th International Cross-Disciplinary Conference on Web Accessibility
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The Web accessibility discipline strives for the study and improvement of front-end Web design towards people with disabilities. Best practices such as WCAG dictate how Web pages should be created accordingly. On top of WCAG, several evaluation procedures enable the measurement of the quality level of a Web page. We leverage these procedures in an automated evaluation of a nearly 30 million Web page collection provided by the Portuguese Web Archive. Our study shows that there is high variability regarding the accessibility level of Web pages, and that few pages reach high accessibility levels. The obtained results show that there is a correlation between accessibility and complexity (i.e., number of HTML elements) of a Web page. We have also verified the effect of the interpretation of evaluation warnings towards the perception of accessibility.