Free QR Code Generator

Generate QR codes for URLs, text, contact information, WiFi credentials, and more. Customize size and error correction level.

QR Code Type

Content

Text

Settings

Size (pixels)

Error Correction

Generated QR Code

Generate a QR code to see it here

What are QR Codes?

QR codes (Quick Response codes) are two-dimensional barcodes that can store large amounts of data in a compact, machine-readable format. Originally developed in 1994 by Denso Wave, a subsidiary of Toyota, QR codes have become ubiquitous in modern digital communication.

Unlike traditional barcodes that can only store up to 20 characters, QR codes can store thousands of characters, making them perfect for storing URLs, contact information, WiFi credentials, and much more. They can be read by any smartphone camera, making them incredibly accessible and user-friendly.

QR codes work by encoding data in a pattern of black and white squares arranged in a grid. The three large squares in the corners help the scanner orient the code, while the smaller squares contain the actual data. This design allows QR codes to be read quickly and accurately, even when partially damaged or at an angle.

Common QR Code Use Cases

Business & Marketing

• Restaurant menus and ordering systems
• Product information and reviews
• Event tickets and registration
• Social media profile links
• Business card contact sharing
• Promotional campaigns and discounts

Technology & Development

• WiFi network sharing
• App store download links
• Two-factor authentication codes
• API documentation links
• Software download pages
• Developer tool shortcuts

QR Code Best Practices

Size and Placement

Make your QR codes large enough to be easily scanned. A minimum size of 2x2 inches (5x5 cm) is recommended for print materials. Ensure there's enough white space around the code and avoid placing it in areas that might be damaged or covered.

Error Correction

Higher error correction levels make QR codes more robust but increase their size. Use Medium (15%) for most applications, High (30%) for codes that might be damaged, and Low (7%) when size is critical.

Testing and Validation

Always test your QR codes with multiple devices and scanning apps before distribution. Ensure the destination URL is working and the content loads properly on both mobile and desktop devices.