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G4_05 Tab order for pages with annotations correctly set

PDF113

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Use case(s): Fundamental 4: Logical Content Order

Last updated on January 3, 2025

Description

The objective of this technique is to show that the document’s tab order for annotations, such as form fields, links or notes, is established by the logical content order. This ensures logical navigation when using the Tab key.


Download(s)

These minimal examples are designed to express a single Technique. Effective use requires software that supports Tagged PDF.

Test(s)

Expected Results

Checks #⁠1 through #⁠3 are all true.

Procedures

  1. Check that the logical content order of the tags matches the author’s intent.
  2. Check that the order of the content within each tag matches the author’s intent.
  3. If the page contains annotations such as form fields, links or notes, check that the tab order is set to follow the logical content order.

Application to WCAG 2.x

This Technique addresses the following WCAG 2.x Success Critieria:

Related Web Accessibility Initiative (WAI) PDF Techniques

W3C WAI’s PDF Techniques were developed in the 2000s to support the launch of WCAG 2.0. This Techniques may be used as a replacement for the following W3C Technique(s):

Matterhorn Protocol

The Matterhorn Protocol 1.1 provides an algorithm for conformance with PDF/UA-1. Matterhorn checkpoint(s) (human or machine) relevant to this use-case:

  • Human check09-001
  • Human check28-001
  • Machine check28-008
  • Machine check28-009

Accessibility Technique Support Finder

Accessibility Technique Support Finders allows you to quickly locate software and services that claim to support a given Technique. Simply search the internet with a given technique’s finder together with the name of your product.

The technique finder for this Technique is: UA1_Tpdf-G4_05

NOTE: the “technique support finder” concept was introduced in January 2025; please allow time for adoption.

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