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ordering the ‘tags’ of the PDF, which tells assistive technology the correct order to announce the content in a logical way.Making a PDF document accessible can involve: Since the PDF/UA standard was published in 2012 it has become possible to add information to PDF documents so that they can work better with assistive technology, including screen reader software. To address the needs of people who use assistive technology, the PDF Association introduced the PDF/Universal Accessibility standard (PDF/UA). Because it was introduced as a way to share digital versions of print documents, it did not initially include support for assistive technology such as screen readers. It has been around as a document format since the early 1990s. PDF is the most popular document format for sharing information online. In this article, we’ll introduce tagged PDFs and then discuss one of the main factors undermining PDF accessibility – how well PDF viewer applications work with screen readers. In WebAIM’s Screen Reader User Survey of 2019, 75.1% of respondents indicated that PDFs are very or somewhat likely to pose significant accessibility issues.

While government departments, educational institutions and organisations are slowly shifting towards HTML as the format for sharing information online, PDF is still the default way to share a digital version of a print document.ĭespite the tools and resources available to make PDFs accessible, screen reader users still have an unfavourable view of the format. According to the latest CommonCrawl data, PDFs account for almost 1% of all links on the internet – more than any other file format apart from HTML (the file format of webpages).

MacOS versions supported: macOS 13 (Ventura), macOS 12 (Monterey), macOS 11.1 (Big Sur), macOS 10.15 (Catalina), Mac OSX 10.14 (Mojave), Mac OSX 10.Think your PDF is accessible? Think again. PDF Studio Viewer is a reliable free PDF viewer for Mac that renders PDF documents with high fidelity (including digital signatures), and allows users to annotate documents as well as fill interactive PDF forms.