comparison
WCAG 2.2 vs WCAG 2.1
WCAG 2.2 (Web Content Accessibility Guidelines 2.2, Global (referenced by most national accessibility laws), 2023) and WCAG 2.1 (Web Content Accessibility Guidelines 2.1, Global, 2018) are two of the most-referenced accessibility frameworks in digital compliance. This guide compares them side by side — jurisdiction, scope, conformance approach, penalties, and how a single audit can cover both simultaneously.
What is WCAG 2.2?
WCAG 2.2 (pronounced 'wuh-cag 2.2') is the World Wide Web Consortium's globally adopted standard for web accessibility, published October 2023, defining 87 testable success criteria organised under four principles: Perceivable, Operable, Understandable, Robust.
Maintainer
World Wide Web Consortium (W3C)
Jurisdiction and enforcement
Global (referenced by most national accessibility laws). Referenced by ADA, EAA, Section 508, AODA and many others.
What is WCAG 2.1?
WCAG 2.1 is the World Wide Web Consortium's accessibility standard published June 2018, adding 17 success criteria to WCAG 2.0 — primarily addressing mobile, low vision, and cognitive disabilities — and currently referenced as the conformance baseline by the European Accessibility Act and most procurement frameworks.
Maintainer
World Wide Web Consortium (W3C)
Jurisdiction and enforcement
Global. Referenced by EN 301 549 (current EU baseline) and many national laws.
WCAG 2.2 vs WCAG 2.1 — the key differences
The principal difference is jurisdictional: WCAG 2.2 applies in Global (referenced by most national accessibility laws), while WCAG 2.1 applies in Global. WCAG 2.2 is maintained by World Wide Web Consortium (W3C); WCAG 2.1 is maintained by World Wide Web Consortium (W3C). The standards differ on scope, conformance grading, and penalty structure — but a well-designed accessibility programme can satisfy both simultaneously by adopting the strictest applicable requirement and cross-mapping findings.
Scope
WCAG 2.2 covers: Web content, Mobile web, Web applications, PDF documents (with PDF/UA), EPUB publications. WCAG 2.1 covers: Web content, Mobile web, Web applications.
Penalties
WCAG 2.2: United States: civil penalties under ADA Title III; demand letters typically settle at $3,000–$25,000; litigated cases can reach $50,000+ in attorney-fee awards. WCAG 2.1: Same as WCAG 2.2 — penalties are downstream of the national law citing WCAG.
How to comply with both at once
Adopt the stricter applicable conformance level — typically WCAG 2.2 Level AA — as your engineering baseline. Audit against that baseline once, then cross-map findings to both WCAG 2.2 and WCAG 2.1 specific requirements. A single Accessibility Conformance Report (ACR) using VPAT 2.5 INT can document both.
When you might need just one
If you operate exclusively in Global (referenced by most national accessibility laws) and have no cross-border procurement exposure, you may only need WCAG 2.2. The same applies in reverse for WCAG 2.1. For organisations selling cross-border, into the EU or US public sector, the safer default is to plan to both simultaneously.
Sources
- Web Content Accessibility Guidelines (WCAG) 2.2 — W3C
- WCAG 2 Overview — W3C WAI
- What's New in WCAG 2.2 — W3C WAI
- Test Evaluating Web Accessibility — W3C WAI
- Web Content Accessibility Guidelines (WCAG) 2.1 — W3C
FAQ
Frequently asked questions
Cited answers. Sourced. Updated as standards and case law change.
Is WCAG 2.2 stricter than WCAG 2.1?
Neither standard is uniformly "stricter" — they cover different regulatory domains. WCAG 2.2 is more prescriptive about web content; WCAG 2.1 about web content. For organisations exposed to both, a unified WCAG 2.2 AA baseline typically satisfies the technical requirements of both.
Can a single audit satisfy WCAG 2.2 and WCAG 2.1?
Yes. Both standards ultimately reference WCAG-aligned criteria. A combined audit with cross-mapped findings can produce documentation acceptable to both regulators.
Which jurisdictions enforce WCAG 2.2?
Global (referenced by most national accessibility laws). Referenced by ADA, EAA, Section 508, AODA and many others.
Which jurisdictions enforce WCAG 2.1?
Global. Referenced by EN 301 549 (current EU baseline) and many national laws.
What happens if I am not compliant with WCAG 2.2?
United States: civil penalties under ADA Title III; demand letters typically settle at $3,000–$25,000; litigated cases can reach $50,000+ in attorney-fee awards European Union: fines under EAA national transpositions vary by member state, up to €1,000,000 in some jurisdictions Canada (AODA): C$50,000–C$100,000 per day per violation in Ontario
What happens if I am not compliant with WCAG 2.1?
Same as WCAG 2.2 — penalties are downstream of the national law citing WCAG
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