What this test checks
This test checks whether form fields in the PDF document have correct tooltips or labels. This test is applicable only if the PDF document contains an interactive form.
Why this maybe a barrier
Labels and/or tool-tips provide useful information about form fields to the user, often declaring the purpose of the form fields or tips to fill them.
Without labels or tool-tips assistive technologies cannot announce the purpose of form fields, making the form unusable for users who rely on such tools. This can be a barrier for disabled users relying on assistive technologies for navigating interactive forms in PDF documents.
WCAG 2.2 Technique
This check is related to the WCAG 2.2 technique → PDF10: Providing labels for interactive form controls in PDF documents.
WCAG 2.2 Success Criteria
This test is related to multiple WCAG success criteria:
1.3.1 Info and Relationships (Level A) — "Information, structure, and relationships conveyed through presentation can be programmatically determined or are available in text."
For more information, visit WCAG 2.2 Success Criteria 1.3.1, under the guideline Adaptable.
3.3.2 Labels or Instructions (Level A) — "Labels or instructions are provided when content requires user input."
For more information, visit WCAG 2.2 Success Criteria 3.3.2, under the guideline Input Assistance.
PDF/UA Principle
Section 7.18.4: Forms — "A Widget annotation shall be nested within a Form tag per ISO 32000-1:2008, 14.8.4.5, Table 340".