Question 1

How do QR codes work?

Accepted Answer

QR codes encode information in a two-dimensional barcode that smartphones can scan. They use error correction algorithms to remain readable even if partially damaged. When scanned, the phone's camera decodes the pattern and performs the action (opening a URL, dialing a number, etc.).

Question 2

What size should I print my QR code?

Accepted Answer

The minimum recommended size is 2×2 cm (0.8×0.8 inches) for reliable scanning from smartphones. For outdoor or distant scanning, use at least 5×5 cm (2×2 inches). Larger QR codes are easier to scan but take more space.

Question 3

What are error correction levels and which should I choose?

Accepted Answer

Error correction allows QR codes to be read even when damaged. Low (7%) is for pristine conditions, Medium (15%) for general use, Quartile (25%) for slight damage risk, and High (30%) for environments where damage is likely. High error correction makes QR codes denser but more resilient.

Question 4

Can I customize the colors of my QR code?

Accepted Answer

This tool generates standard black-and-white QR codes for maximum compatibility. For colored or branded QR codes, you'll need specialized design software. Always ensure high contrast between foreground and background colors for reliable scanning.

Question 5

How can I track how many people scan my QR code?

Accepted Answer

To track scans, create a URL shortener with analytics (like Bitly or TinyURL) and encode that shortened URL in your QR code. The shortener will track all clicks, giving you scan statistics. You can also use dedicated QR code platforms with built-in analytics.

Question 6

What's the maximum amount of data a QR code can store?

Accepted Answer

QR codes can store up to approximately 2,950 characters for alphanumeric text or 4,296 characters for numeric data. However, more data creates denser, harder-to-scan codes. For best results, keep URLs under 100 characters using URL shorteners.

Question 7

How do I test if my QR code works correctly?

Accepted Answer

Test your QR code with multiple devices (iPhone, Android) and different camera apps before mass production. Try scanning at various distances and lighting conditions. Verify the action (URL opens, number dials) works as expected on all devices.

QR Code Generator

Use Cases

Frequently Asked Questions

How do QR codes work?

What size should I print my QR code?

What are error correction levels and which should I choose?

Can I customize the colors of my QR code?

How can I track how many people scan my QR code?

What's the maximum amount of data a QR code can store?

How do I test if my QR code works correctly?

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