AccessLumens

WCAG 2.4.3

Focus Order

Level AWCAG 2.0

5.8%

of the 941 county government PDFs we scanned fail this

This is a document figure, not a website one. None of our 609 site scans produced an automated finding for this criterion, which says what the engines can test on a web page, not that websites pass it. How we scanned the PDFs

What it means and how to fix it

What 2.4.3 covers

  • We detect this: Interactive controls the Tab key cannot reach at allA control left out of the focus order has no position in it. Reported under 2.1.1 as well.
  • We detect this: Focus landing on content hidden from assistive technology
  • We detect this: PDF pages with links or form fields that set no tab orderWithout one, a reader may tab through them in an order unrelated to the page. Setting it to follow the tags is the fix.
  • No engine can detect this: A focus order that exists but makes no senseWhether the sequence preserves meaning is a judgement about the content. It needs a person tabbing through.

For what the criterion formally requires, read the W3C Understanding document.

What this does not measureLimits of these figures, and where the corpus came from
  • No automated engine tests focus order directly, and we do not claim to. The website figures come from the keyboard detectors listed above, each of which identifies a specific, unambiguous failure. The PDF figure counts documents whose pages with links or form fields set no tab order at all. Treat both as a floor on how many have a focus-order problem, never as the total.
  • These are five targeted cohorts, not a random sample of the web. Per-cohort rates are the figure to quote; the pooled rate is a convenience sample.
  • Denominators count sites that produced a result. Sites that were blocked or errored are excluded rather than counted as passing.
  • Occurrence counts are floors: the engine records at most 25 occurrences of a rule per page.
  • The EU and Indian cohorts retained only the primary success criterion per finding, so a rule mapping to several criteria contributes to one of them in those two cohorts and to all of them in the other three.
Cohorts in the corpus, with sites scanned and attempted
CohortScannedAttempted
Shopify DTC stores7575
US local government158221
US healthcare providers208218
EU e-commerce107170
Indian financial services6172

Corpus generated 2026-10-05.

Check your own site

A free scan runs the related checks that bound WCAG 2.4.3, but it cannot confirm it. Treat a clean result as the start of a manual review, not a pass.

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