Abstract
The paper shows why validity and semantics matters for a PDF/UA evaluation concept and how an automated checking tool can address this. In order to translate machine-testable requirements into checking criteria a special query language is developed called PQL (PDF Query Language). PQL will be implemented in PDF Accessibility Checker PAC 2, the first and free PDF/UA compliance checker crowd-funded by the foundation “Access for all”.
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References
Chisholm, W.: Validity and Accessibility, http://www.w3.org/WAI/GL/2005/06/validity-accessibility.html
Erle, M.: PDF umsetzen und prüfen. In: Hellbusch, J.E., Probiesch, K.: Barrierefreiheit verstehen und umsetzen. Webstandards für ein zugängliches und nutzbares Internet, 433–516 (2011)
Johnson, D.: Each PDF Page is a Painting, http://www.appligent.com/talkingpdf-eachpdfpageisapainting
Johnson, D.: Objects and Semantics, http://www.appligent.com/talkingpdf-objects-and-semantics
Johnson, D.: Review PAC (PDF Accessibility Checker) 1.1, http://www.appligent.com/talkingpdf-PDFAccessibilityCheckerReview
PDF Accessibility Checker (PAC), http://www.access-for-all.ch/en/pdf-lab/pdf-accessibility-checker-pac.html
PDF Reference / ISO 32000-1, http://www.adobe.com/devnet/pdf/pdf_reference.html
PDF/UA (Universal Accessibility) / ISO 14289-1, http://pdf.editme.com/PDFUA
Foundation “Access for all“, a Swiss non-profit organization, and their crowd funding for PDF Accessibility Checker PAC 2, http://www.access-for-all.ch/en/pdf-lab/pdf-accessibility-checker-pac/donation-pac-2.html
WCAG 2.0-Techniques for PDF, http://www.w3.org/WAI/GL/WCAG20-TECHS/pdf.html
Web Content Accessibility Guidelines WCAG 2.0, http://www.w3.org/TR/WCAG/
XML Path Language (XPath) Version 1.0, http://www.w3.org/TR/1999/REC-xpath-19991116/
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© 2012 Springer-Verlag Berlin Heidelberg
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Erle, M., Hofer, S. (2012). Validity and Semantics – Two Essential Parts of a Backbone for an Automated PDF/UA Compliance Check for PDF Documents. In: Miesenberger, K., Karshmer, A., Penaz, P., Zagler, W. (eds) Computers Helping People with Special Needs. ICCHP 2012. Lecture Notes in Computer Science, vol 7382. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-31522-0_93
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DOI: https://doi.org/10.1007/978-3-642-31522-0_93
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-31521-3
Online ISBN: 978-3-642-31522-0
eBook Packages: Computer ScienceComputer Science (R0)