xsbl is an AI-powered web accessibility scanner that checks your website against WCAG 2.2 AA and AAA criteria. It scans your rendered pages in a real browser, identifies violations like missing alt text, contrast failures, broken ARIA, and keyboard traps, and generates specific code fix suggestions for your actual markup.

How is xsbl different from accessibility overlays?

Unlike overlays that inject JavaScript and only detect about 30% of WCAG issues, xsbl scans your actual rendered DOM in a real Chromium browser. It provides real code fixes instead of cosmetic patches, works with screen readers rather than against them, and produces exportable compliance evidence accepted by courts and auditors.

Does xsbl support WCAG 2.2?

Yes. xsbl covers 90+ rules across WCAG 2.2 AA and AAA criteria, including contrast, alt text, ARIA, keyboard navigation, forms, headings, landmarks, and more. Each issue is mapped to the specific WCAG success criterion it violates.

Can xsbl create GitHub pull requests with accessibility fixes?

Yes. Connect your GitHub repository and xsbl can generate pull requests with AI-suggested code fixes for accessibility issues. You can fix individual issues or use bulk fix to address multiple issues in a single PR.

How much does xsbl cost?

xsbl offers a free tier with 1 site and 3 scans per month. Paid plans start at $19/month for Starter, $69/month for Pro with unlimited sites and 100 scans, and $249/month for Agency with white-label reports, VPAT generation, and dedicated support.

All WCAG criteria

Perceivable1.1 Text AlternativesLevel AWCAG 2.0

1.1.1: Non-text Content

All non-text content that is presented to the user has a text alternative that serves the equivalent purpose.

Why this matters

Screen readers cannot interpret images, icons, or charts without text alternatives. Users who are blind, have low vision, or have cognitive disabilities rely on alt text to understand visual content. Without it, critical information is invisible to them.

Common failures

These are the most frequent ways this criterion is violated in real-world websites:

Images missing alt attributes entirely
Decorative images not marked with empty alt or role='presentation'
Icon buttons with no accessible label
Complex charts or infographics without text summaries
Image links with no discernible text
SVGs without title or accessible name

How to fix

Add descriptive alt text to all informational images: <img src='chart.png' alt='Revenue grew 40% in Q3'>
Use empty alt for decorative images: <img src='divider.svg' alt=''>
Add aria-label to icon buttons: <button aria-label='Close menu'>
Provide text summaries for complex visuals using figcaption or adjacent text
Ensure SVGs have <title> elements or aria-label attributes

Related axe-core rules

xsbl uses axe-core to automatically detect violations of this criterion. The following rules are checked:

image-alt
input-image-alt
area-alt
object-alt
svg-img-alt
role-img-alt

Check your site for 1.1.1 violations

xsbl scans your rendered pages in a real browser and finds violations of this criterion automatically.

Scan your site free

Official reference: Understanding WCAG 1.1.1: Non-text Content (W3C)