PDF is rarely chosen because it's been assessed as the best format for the content.Neil King, Vision Australia
PDF at The University of Melbourne
- PDF is rarely the best format for online content.
- The preferred format for content at The University of Melbourne is HTML.
Legal status of PDF documents
- The Australian Human Rights Commission has taken the view that "organisations that publish documents only in PDF risk complaint under the DDA unless they make the content available in at least one additional formal and in a manner that incorporates principles of accessible document design".
- The preferred alternative format for PDF is HTML.
PDF Accessibility Techniques
- The W3C has a set of PDF Techniques for WCAG 2.0 which are a useful guide for PDF creators.
- The Australian Government Information Management Office (AGIMO) have some excellent guides for preparing accessibile PDF documents on their web site, under the heading PDF Accessibility for Everyone.
Making Documents Accessible
- Vision Australia has created an excellent Document Accessibility Toolbar (DAT) for Microsoft Word that makes creating accessibaccessible PDFs easy. Document Accessibilty Toolbar - Installation Instructions
Whether it be PDF, Word, or HTML the following issues need to be addressed in order to make a document accessible:
- Use headings. In HTML this means adding heading tags, e.g. <h1> - <h6>. In Word this means using styles, e.g. Heading 1, Heading 2, Normal.
- Use lists. In HTML this means adding bulleted and numbered lists, e.g. <ul>, <ol>, <li>. In word this means adding bullets and numbering, e.g. Bulleted, Numbered.
- Present information in a linear format. In HTML this means using <div> tags and CSS to position elements on the page. In Word this means using Columns.
- Use table headings. In HTML this means adding <th> tags.
- Provide alt text for images
- Identify the language of the document
- Allow text to be resized
- Use sufficient color contrast
- W3C PDF techniques
- Acrobat X has an inbuilt checker which is very useful
A Quick Reference Card for Accessibile PDF Creation can be downloaded form Adobe.
Exporting PDF from Word
- Using Windows, click on the Acrobat menu and select preferences.
- Ensure that 'Enable Accessibility and Reflow with tagged Adobe PDF' is checked.
- Publishing the PDF document needs to be done via the 'Acrobat' menu by clicking on the 'Create PDF' button
- Documents can also be saved by clicking on 'File' and then 'Save as PDF or XPS'. You will need to click on 'Options' and ensure that 'Document structure tags for accessibility is checked.
Common misunderstandings about PDF
Users with vision impairments can't access PDF documents
Not true. In fact some users with vision impairments actually prefer PDF. The problem is that some users can't access them at all if they are in an inaccessible format. Hence the call for documents to be provided in an alternative accessible format.
PDF documents are secure and can't be tampered with
Anything that is published on the web can be changed, including PDF files. Web sites such as www.pdfunlock.com allow users to remove passwords and restrictions from secured PDF files in seconds. Source documents should be archived locally, not stored on the web.
Publishing in PDF document is quicker because you can just convert it from MS Word
Not true. Publishing PDF documents that do not discriminate against users with disabilities is often more time consuming than creating a HTML document because there are a number of additional steps and checks that need to be undertaken. Very few PDF documents produced at THe University of Melbourne are accessible to users with disabilities.
Users who are having problems can just contact us directly
Users with disabilities will rarely contact publishers about problems that they are having because, like everyone else they have other things to do, and often they don't know where the problem lies, they just know they can't get the information.
For assistance or to report accessibility problems please contact:
Web Accessibility Lead
Phone: +61 3 9035 4867