Qr Code

QR Code Skill

Work with QR code generation and display in kheMessage.

When to Use

• Modifying QR code appearance
• Fixing QR code rendering issues
• Adding QR code features
• Optimizing QR code size

QR Code Pages

1. Bottom-right panel - Small QR in main editor
2. Full-page QR - /qr or qr.html

Implementation

Uses qrcode.js library:

function updateQR() {
  const el = document.getElementById('qrcode')
  if (!el || typeof qrcode !== 'function') return
  const url = location.href
  try {
    const qr = qrcode(0, 'L')  // Type 0, Error correction L
    qr.addData(url)
    qr.make()
    el.innerHTML = qr.createSvgTag({ cellSize: 4, margin: 0 })
  } catch (e) {
    el.innerHTML = ''
  }
}

Error Correction Levels

• L (7%) - Currently used, smallest size
• M (15%) - Medium
• Q (25%) - Higher reliability
• H (30%) - Highest reliability

Theme Support

QR colors adapt to theme:

html.dark #qrcode svg rect {
  fill: #292524;  /* Background */
}
html.dark #qrcode svg path {
  fill: #fafaf9;  /* Modules */
}

QR Size Limits

• QR codes have capacity limits based on version and error correction
• Very long URLs may fail to generate
• Consider using URL shortener for extremely long content

Styling

The QR container has consistent styling:

#qrcode-wrap {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
}

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