Task 7: QR Code Generator - Implementation Preparation Complete

Status: Ready for deployment when server is online

Date Prepared: March 24, 2026 Component File: QRCodeGeneratorClient.tsx Staging Location: /c/Users/John/webtools-dev-batch/QRCodeGeneratorClient.tsx Target Location: /home/websites1/webtools/src/app/components/tools/QRCodeGeneratorClient.tsx

Implementation Details

Component Features

• Text/URL input field with textarea (4 rows)
• QR code size slider (100-500px, default 200px)
• Error correction level selector:
  • Low (7%)
  • Medium (15%) - default
  • High (25%)
  • Very High (30%)
• Real-time QR code generation using QRCode.js library
• Download functionality (PNG format)
• Ad unit integration (slot 4001006004)

Technical Stack

• Framework: Next.js (React Client Component)
• Library: qrcodejs v1.0.0 (CDN: cdnjs.cloudflare.com)
• Styling: Tailwind CSS with dark theme
• Ad Integration: AdUnit component at bottom

Key Implementation Points

1. Script Loading: Uses Next.js Script component with afterInteractive strategy
2. Global Type Declaration: Declares Window.QRCode interface for TypeScript
3. State Management:
   • input: QR content (default: "https://usefultoolsonline.com")
   • size: QR dimensions in pixels
   • errorLevel: Error correction level (L/M/Q/H)
   • scriptReady: CDN script load status
4. Download Handler: Extracts canvas from QR generator and triggers PNG download
5. Effect Hook: Regenerates QR code whenever input, size, or errorLevel changes

Pre-Deployment Verification

• Component file created and syntax verified
• All imports present (React hooks, Next.js Script, AdUnit)
• State initialization correct
• useEffect dependencies properly configured
• Download functionality implemented
• Tailwind styling consistent with project (dark theme)
• AdUnit slot specified: 4001006004
• TypeScript types defined
• CDN library reference valid

Dependencies Required

• react
• next
• @/app/components/AdUnit (existing component in project)
• tailwindcss (for styling)
• qrcodejs library (loaded via CDN)

Testing Checklist (On Server)

When deployed to server, verify:

1. QR Code generates on text input change
2. Size slider updates QR dimensions (100-500px range)
3. Error correction level dropdown changes error correction
4. Download button works and saves as PNG
5. Default value (usefultoolsonline.com URL) displays correctly
6. Script ready state prevents download until CDN loads
7. Ad unit displays below component
8. Styling matches other tool components

Deployment Command

When server is online, deploy to /home/websites1/webtools/src/app/components/tools/:

scp QRCodeGeneratorClient.tsx [email protected]:/home/websites1/webtools/src/app/components/tools/

Then trigger build/deployment process on server.

Notes

• Component uses client-side rendering ("use client" directive)
• QR library is loaded externally via CDN for better performance
• Default input set to usefultoolsonline.com as per specification
• Download generates PNG only (qrcodejs provides canvas export)