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QR Code Generator

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How to use the QR Code Technology Guide

Quick Response (QR) codes are 2-dimensional matrix barcodes capable of storing significantly more data than standard barcodes. A key feature of modern QR technology is Error Correction, which allows the code to be scanned even if part of it is damaged or covered by a logo.

🛡️ Error Correction Explained

QR codes contain redundant data. This means they can still be scanned even if damaged.

  • Level L (7%): Best for simple URLs.
  • Level M (15%): Standard balance.
  • Level Q (25%): Good for adding logos.
  • Level H (30%): Max protection for industrial use.

🔄 Static vs. Dynamic

Static QRs (This Tool): Data is fixed. If you change the URL, you must reprint the code. Free forever.
Dynamic QRs: Points to a redirect server. You can change the destination URL later. Usually requires a paid subscription.

🎨 Best Practices for Printing

  • Contrast: Always use dark foreground on light background. Inverting colors often breaks scanners.
  • Size: Minimum 2cm x 2cm (0.8") for reliable scanning.
  • Quiet Zone: Leave white space around the border.

⚠️ QR Code Safety

Never scan a random QR code found in public (e.g., sticker on a parking meter) unless you trust the source. Malicious codes ('Quishing') can direct you to phishing sites or download malware. Always verify the URL preview.

The Formula

Result = Input A × Input B (Standard Calculation)

Frequently Asked Questions

Frequently Asked Questions

Do these expire?

**No.** These are Static QR codes. The data (URL, text, etc.) is directly encoded into the image pattern. As long as the standard exists, they will be scannable forever.

Can I track scans?

Not directly with this tool. To track scans, you need a 'Dynamic QR Code' service that routes users through a tracking server before reaching the final destination.

Why isn't my code scanning?

Common reasons: 1) Low contrast (ensure black on white). 2) Too dense (shorten the URL). 3) Too small (print it larger, at least 2cm x 2cm).