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W3C WCAG · WCAG-4-1-PARSING

W3C WCAG 4.1.1 Parsing (Level A) - Obsolete in WCAG 2.2

Ensure valid markup with complete start/end tags, proper nesting, unique IDs, and no duplicate attributes (criterion is obsolete in WCAG 2.2 but retained for backward compatibility with WCAG 2.0/2.1 requirements)

LOWRecommendationDesign defaultsTechnical standardIn forceApplies from 5 October 2023

Where this comes from

Provision: 4.1.1 Parsing (Level A) - Obsolete in WCAG 2.2

Instrument: W3C Web Content Accessibility Guidelines (WCAG) 2.2

Citation: W3C, Web Content Accessibility Guidelines (WCAG) 2.2, Success Criterion 4.1.1 Parsing, Level A (Obsolete), W3C Recommendation 05 October 2023

Text version: WCAG 2.2

Read the official text ↗

Who it applies to

It applies when all of these are true:

  • Service type — any answer

What engineering work it implies

Sample acceptance criteria Landfall generates for this obligation:

  • Elements have complete start/end tags and are nested according to spec
  • IDs are unique on the page (no duplicate id values, especially those referenced by ARIA)
  • Markup validates, or known deviations are documented and shown not to break assistive tech
  • Custom components do not rely on invalid markup that breaks parsing by assistive technology
  • Unit tests cover the core logic (aim for >80% coverage on new code)

Questions people ask

Does W3C WCAG 4.1.1 Parsing (Level A) - Obsolete in WCAG 2.2 apply to my service?
It applies when Service type — any answer.
From when does this apply?
W3C WCAG 4.1.1 Parsing (Level A) - Obsolete in WCAG 2.2 applies from 5 October 2023. Its current status is: in force.

Find out whether this one lands on you

Landfall's pre-scan answers the applicability question above for your product in minutes, then turns every obligation that applies into traceable engineering tickets with a citation chain your auditors can follow.

Run the pre-scanAll W3C WCAG obligations

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