Accessibility · Canvas LTI

The Canvas accessibility scanner that fixes things.

Scans pages, assignments, discussions, files, quizzes, rubrics, and PPTX. Real WCAG contrast math. Broken link detection. One-click fixes written back to Canvas. AI optional — everything works without it.

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WCAG 2.1 AA

ACCESSIBILITY — Course scan

🛡️ Accessibility Scan — BIO 101

Critical: 12 Warnings: 28 Score: 74/100

⚠️ Missing alt text — 8 images · Auto-fix all →

❌ Contrast ratio 2.4:1 (need 4.5:1) — Week3.html

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Per-install license

Each license covers one Canvas install and up to 10 courses. This is a per-instructor license — not a campus-wide contract. Need more courses or institution-wide coverage? Contact us for volume pricing. Installs in under 2 minutes via LTI 1.1 XML.

What Holon Accessibility does

Every feature listed here is available today.

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Full WCAG 2.1 Scan

Scans every page, assignment, discussion, announcement, syllabus, quiz, and rubric for accessibility violations.

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Smart Fix Suggestions

Every issue type has a rule-based fix suggestion. Connect Claude for AI-enhanced context-aware suggestions.

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One-Click Fix Apply

Accept a suggestion and Holon writes the fix back to Canvas immediately. Alt text, link text, headings — done.

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Real Contrast Math

Parses hex, rgb, and named colors. Computes exact WCAG relative luminance ratios — not estimates.

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Broken Link Detection

HTTP checks on every external link in the course. Flags 404s and timeouts as critical issues.

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PPTX Scanning

Parses PowerPoint files for missing slide titles, image alt text, and speaker notes.

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Score Trends

Every scan stored. Trend chart shows your course's accessibility score improving over time.

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Auto-Scan Scheduling

Set daily, weekly, or monthly automatic scans. No manual effort to keep your course current.

The Canvas accessibility scanner that fixes things.

What Holon Accessibility does

Ready to try it?