HolonTechnology ← All Tools
Try Free →
Accessibility · Canvas LTI

Upload once. Fix everything.

Holon Patch takes PDFs, Word docs, and PowerPoints uploaded to Canvas and runs automated accessibility fixes — alt text generation, heading structure, contrast corrections — writing results back to Canvas pages.

Start free trial
Holon Patch screenshot
📦
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 Patch does

Every feature listed here is available today.

📄
File Processing
Accepts PDF, Word, PowerPoint, and Excel files uploaded to Canvas. Processes in the background.
♿
Accessibility Fixes
Adds missing alt text, fixes heading hierarchy, adjusts contrast on extracted text. WCAG 2.1 targeted.
✨
AI Alt Text
Claude generates descriptive alt text for images based on visual content. Context-aware — not generic.
📤
Canvas Writeback
Fixed content is written back to Canvas as an accessible HTML page, replacing the inaccessible file.
📦
Batch Processing
Queue multiple files at once. Patch runs them all in the background — come back to completed fixes.
📋
Fix Report
Every fix logged with before/after comparison. Full audit trail of what was changed and why.
🔄
Re-run on Update
When a file is replaced in Canvas, Patch detects the update and re-processes automatically.
🚫
No AI Required
Alt text generation uses AI when available, but structural fixes (headings, tables, links) run without it.

Ready to try it?

5-day free trial. No credit card required. Installs in Canvas in under 2 minutes via LTI.

Start free trial