Perceivable
Alternatives, structure, presentation
WCAG 2.1 AA accessibility testing API
Test rendered pages or supplied HTML against selected machine-verifiable conditions mapped to WCAG 2.1 Level A and AA. Keep criterion coverage, rule evidence, and the work that still needs human evaluation in the same result.
Scanning profile
wcag-2.1-aa-webWCAG 2.1 AATechnical preflight
- Input
- Public URL or HTML
- Mapping
- WCAG 2.1 · Level A and AA
- Boundary
- Automated, partial, and manual coverage
PrinciplesPerceivable · Operable · Understandable · Robust
ResultFinding + criterion + evidence + coverage
GateAll findings or new findings only
Use WCAG 2.1 AA through the API.
Send wcag-2.1-aa-web with the asset and keep this profile’s evidence boundary in the returned result.
Four principles enter one inspectable release record.
The profile keeps WCAG's organizing principles visible without compressing them into a single score or implying equal automated coverage.
Operable
Keyboard, focus, navigation
Understandable
Language, labels, recovery
Robust
Names, roles, values, status
Use the profile as a repeatable release gate.
Pin the profile, compare with a baseline, and route the result without rewriting the integration when the source page changes.
- 1
Scan the rendered state
Submit a public URL or supplied HTML in the target environment.
- 2
Classify the delta
Separate new, recurring, resolved, and suppressed findings.
- 3
Route unresolved work
Fail the gate, create a repair task, and preserve manual checkpoints.
A WCAG finding should survive the handoff.
The evidence record ties a failed condition to the page state and the exact profile that produced it.
Illustrative result
review_required- Profile
- wcag-2.1-aa-web · resolved version
- Criterion
- WCAG success-criterion reference
- Location
- URL + selector + rendered evidence
- Coverage
- Automated / partial / manual
Read the source behind this profile.
The WCAG 2.1 AA source and its legal or standards context can change. AccessPreflight pins the profile version used for a scan; your organization should re-review applicability and the source when requirements change.
Run WCAG 2.1 AA where content enters the workflow.
Keep the profile, coverage boundary, evidence, and human-review queue attached to every result.
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Automated preflight is not an accessibility certification or legal determination.