A Proposed Architecture for Large Scale Web Accessibility Assessment

  • Mikael Holmesland Snaprud
  • Nils Ulltveit-Moe
  • Anand Balachandran Pillai
  • Morten Goodwin Olsen
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4061)


This paper outlines the architecture of a system designed to demonstrate large scale web accessibility assessment developed in a European research project. The system consists of a set of integrated software components designed to automatically evaluate accessibility metrics for a large number of websites and present results in a common report. The system architecture is designed to be maintainable, scalable, and extensible in order to facilitate further development of the tool. To meet these design criteria within a limited set of resources, an Open Source approach is adopted both for selecting, designing and developing the software.


Software architecture Web accessibility evaluation free/open source software 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    European Internet Accessibility Observatory,
  2. 2.
    Unified Web Evaluation Methodology version 0.5,
  3. 3.
    Web Content Accessibility Guidelines version 1.0,
  4. 4.
    Englefield, P., Paddison, C., Tibbits, M., Damani, I.: A Proposed Architecture for Integrating Accessibility Test Tools. IBM Systems Journal, Special Issue on accessibility 44(3), 537–555 (2005), Google Scholar
  5. 5.
    Evaluation and Report Language,
  6. 6.
    Snaprud, M.H., Jensen, C.S., Ulltveit-Moe, N., Nytun, J.P., Rafoshei-Klev, M.E.: European Internet Accessibility Observatory (EIAO), eGEP - Getting full Impact of eGovernment - launching a European Measurement Framework, Vienna, Austria (2006)Google Scholar
  7. 7.
    Ulltveit-Moe, N., Gjøsæter, T., Snaprud, M.H.: An Open Architecture for Large Scale Monitoring of Web Accessibility. In: Workshop on Web Accessibility and Metamodelling, Grimstad Norway (2005)Google Scholar
  8. 8.
    Snaprud, M.H., Ulltveit-Moe, N., Granmo, O.C., Menk, M.E., Wiklund, A., Sawicka, A.: Quantitative Assessment of Public Web Sites Accessibility,
  9. 9.
    Perens, B.: Global Technology Policy Institute,
  10. 10.
    Stallman, R.: GNU General Public License (GPL),
  11. 11.
    van Rossum, G.: Python,
  12. 12.
    Plone: A user-friendly and powerful open source Content Management System,
  13. 13.
    Pillai, A.B.: HarvestMan (2005),
  14. 14.
    Nalevka, P.: Relaxed HTML Validator (2005),
  15. 15.
  16. 16.
    Riddoch, A., et al.: 3store (2005),
  17. 17.
    PostgreSQL Global Development GroupPostgreSQL (2005),
  18. 18.
    Henzinger, M.R., Heydon, A., Mitzenmacher, M., Najork, M.: On Near-Uniform URL Sampling (2005),
  19. 19.
    Craven, J., Snaprud, M.H.: Involving Users in the Development of a Web Accessibility Tool,

Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Mikael Holmesland Snaprud
    • 1
  • Nils Ulltveit-Moe
    • 1
  • Anand Balachandran Pillai
    • 2
  • Morten Goodwin Olsen
    • 1
  1. 1.Faculty of EngineeringAgder University CollegeGrimstadNorway
  2. 2.SpikesourceIndia Pvt LtdBangaloreIndia

Personalised recommendations