WCAG Scanner

Find every accessibility issue
on your website.

Automated WCAG 2.1 and 2.2 scanning across your entire website. Issues organized by level, principle, and page — with specific remediation guidance for every finding.

The Scanner

What the Scanner Does

The Angstroma WCAG Scanner crawls your website and tests each page against WCAG 2.1 and 2.2 success criteria. You get a structured report of every issue found — with the affected code element, the WCAG criterion it violates, the severity, and specific guidance for fixing it.

Standard

WCAG 2.1 and 2.2

Levels

A, AA, and AAA

Scope

Full site — all pages discovered via sitemap and crawl

Frequency

On-demand and scheduled (monthly)

Output

Issue list, page-level summary, VPAT-format report

Coverage

What the Scanner Checks

Image alt text — missing, empty, or inadequate

Heading structure and hierarchy

Form input labels — missing or mismatched

Color contrast — text, UI components, graphics

Keyboard navigability and focus management

ARIA roles, properties, and states

Link text clarity — "click here," "read more" patterns

Language declaration on page and inline

Sufficient click target sizes (WCAG 2.2)

Accessible name for interactive elements

Error identification and suggestion in forms

Video captions and transcripts (if applicable)

Page title and document structure

Skip navigation links

Timeout and session controls

Table headers and data cell associations

Limitations

What Automated Scanning Cannot Do

We are honest about the limits of automated testing. Our scanner can find approximately 30–40% of WCAG issues. The remainder require human judgment.

Whether alt text is meaningful in context (not just present)

Whether the reading order makes logical sense to a screen reader user

Whether interactive patterns (complex widgets, custom components) work with assistive technologies

Whether error messages are actually helpful

Testing with real screen readers, switch access, and voice control

The scanner is a powerful starting point and a way to find and track fixable issues systematically. For comprehensive conformance, supplement it with manual review.

Reports

Issue Reports and Tracking

Every scan produces:

Issue list

Every finding with WCAG criterion, affected element, page URL, severity (A/AA/AAA)

Page summary

Issues per page, most impacted pages sorted by severity

Remediation guidance

Specific, actionable instructions for fixing each issue type

Progress tracking

Compare scans over time to see what has been fixed

VPAT-style report

Compliance snapshot for procurement and legal purposes

Issues are linked to your remediation queue where you can assign them to team members and track fixes.

Scan your website today