PDF_NOT_MARKED
How to Fix the Problem
Provide headings by marking content with heading tags in the PDF document.
Headings convey a properly structured document. Moreover, assistive technology users can access the list of headings in a document and thereby navigate to a particular section and read it. Headings used for visual appeal rather than their meaning are not recommended. In Adobe Acrobat X Pro the Touchup Reading Order tool can be used to structure headings in a document.
Authoring guidance using Adobe Acrobat X Pro
Success Criterion 1.3.1 - Info and Relationships
Success Criterion 2.4.1 - Bypass Blocks
- With a PDF document open in Adobe Acrobat Pro X choose Tools from the tool bar and navigate to Accessibility in the Tool panel.
- Select TouchUp Reading Order to open the TouchUp Reading Order dialog.
-
Draw a rectangle around the text in the document. The following figure shows
a rectangle around the text "Heading 1."
- Click the desired heading button in the dialog.
Evaluation of accessibility with WorldSpace Comply
WorldSpace Comply will crawl a website and analyze and detect untagged PDF documents; however, it will not specifically detect the absence of heading tags. Click the following link for help on using WorldSpace Comply with PDF documents.
PDF3: Ensuring correct tab and reading order in PDF documents
The success criteria facilitate navigating a PDF document in a logical order that is consistent with the content. The visual order of content can suffice for sighted users; however, keyboard and assistive technology users must depend on the tab order to navigate document content, including interactive content such as form fields or hyperlinks. The logical order of navigating a PDF document is created when the document is tagged. An example stressing the necessity of tagging would be a multi-column document, such as a brochure, where the logical order of reading each column separately is fairly obvious to a sighted user; however, a screen reader may read the first line of all columns as a single sentence.
Success Criterion 1.3.2 - Meaningful Sequence
Success Criterion 2.1.1 - Keyboard
Success Criterion 2.1.3 - Keyboard (No Exception)
Success Criterion 2.4.3 - Focus Order
Authoring guidance using Adobe Acrobat X Pro
To set the tab order in Adobe Acrobat X Pro do the following:
- From the View menu choose Show/Hide > Navigation Panes > Page Thumbnails or click on the Pages icon to the left of the document pane.
- Select one or more page thumbnails that appear in the Pages panel.
- Access the context menu for the selected thumbnail(s) and select Page Properties....
- Select the Tab Order tab in the Page Properties dialog and select a tab order option as follows:
Option | Description |
---|---|
Use Row Order | Tabs from the upper left field, moving first left to right and then down, one table row at a time. |
Use Column Order | Tabs from the upper left field, moving first from top to bottom and then across from left to right, one table column at a time. |
User Document Structure | For tagged documents, moves in the tag order specified by the authoring application. Note: This is usually the correct reading order and will be selected by default for tagged documents. |
Unspecified | If the document was created using an earlier version of Acrobat Pro, the tab order is Unspecified by default. With this setting, form fields are tabbed through first, followed by links and then comments ordered by row. This may not be correct reading order. |
Evaluation of accessibility with WorldSpace Comply
WorldSpace Comply will crawl a website and analyze and detect untagged PDF documents; however, it will not specifically ascertain the reading order. Click the following link for help on using WorldSpace Comply with PDF documents.