The first step in making a PDF document accessible is to understand what types of issues may exist in the document. When a PDF file is opened in Adobe Acrobat Pro DC, briefly analyze the document and note its characteristics. Does the document have:
- Scanned pages
- Text, links, graphics or a mixture of elements
- Headings and/or lists
- Data tables
- Mathematical formulas, subscripts, superscripts, or other font attributes
- Form fields
- Annotations such as comments, revision marks, etc.
- Multiple columns of information
- Complex layouts and articles that span different pages
- Multiple languages
The greater number of document features and complex layouts, the more time it may require to make the document accessible.