The list content must be tagged with appropriate and relevant list elements

Rule ID: proper-list-tagging
Ruleset: axe-pdf 2.0
User Impact: Serious
Guidelines: WCAG 2.1 (A), WCAG 2.0 (A)

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Compliance Data & Impact

User Impact

Serious
Minor
Critical

Disabilities Affected

  • Blind
  • Deafblind
  • Mobility

Standard(s)

  • WCAG 2.1 (A)
  • WCAG 2.0 (A)

WCAG Success Criteria [WCAG 2.1 (A)]

  • 1.3.1: MUST: Info and Relationships

WCAG Success Criteria [WCAG 2.0 (A)]

  • 1.3.1: MUST: Info and Relationships

How to Fix the Problem

Tag the list content with appropriate and relevant list elements.

Lists are comprised of three or sometimes four tag types:

  • List: 'L'
  • List Item: 'LI'
  • List Body: 'LBody'
  • Label: 'Lbl'

In Adobe Acrobat Pro, using the Tags Pane:

  1. Click the Selection Tool
  2. Highlight/select the number 1 (or the list symbol) in the first list item (just the number, not the rest of the list item)
  3. Open the Options Menu and select Create Tag from Selection
  4. Select Label from the drop-down menu and click OK
  5. Select the contents of the first list item. Open the Options Menu and select Create Tag from Selection
  6. Select List Item Body from the drop-down menu and click OK
  7. Right-click the Tags Root and select New Tag
  8. Select List Item from the drop-down menu and click OK. This will create an empty List Item tag
  9. Drag and drop the Label tag and the List body tag as children of the List Item tag
  10. Repeat steps 2 through 10 for the rest of the items on the list
  11. Right-click the Tags Root and select New Tag
  12. Select List from the drop-down menu and click OK
  13. Control + click to select all of the LI tags
  14. Drag and drop them nested as children of the L tag (make sure they are in order)

Note: Adobe Acrobat Pro is the most common tool for PDF remediations, but other tools and software are also available and can be used to remediate the PDF.

Why it Matters

When markup is used that visually formats items as a list but does not indicate the list relationship, users may have difficulty navigating the information. An example of such visual formatting is simply using line breaks to separate list items.

Rule Description

Items that are presented visually as lists must be tagged with list elements in PDF documents to allow for assistive technologies can allow users to interact with these elements appropriately

The Algorithm (in simple terms)

The list content must be tagged with appropriate and relevant list elements

Resources

Other Resources

You may also want to check out these other resources.

Refer to the complete list of axe 2.0 rules.

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