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// Generate QR codes for URLs, text, and data instantly
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Choose size, colors, and error correction level. Create QR codes that match your brand.
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// ABOUT QR CODES
How QR Codes Work:
QR Code (Quick Response Code) is a two-dimensional barcode standardized under ISO/IEC 18004. It encodes data in a matrix of black and white modules arranged in a square grid. QR codes use Reed-Solomon error correction to allow reliable reading even when partially damaged.
Error Correction Levels:
L (~7%) | M (~15%) | Q (~25%) | H (~30%) recovery capacity
Common Use Cases:
- >Website URLs and landing pages
- >Wi-Fi network credentials sharing
- >Contact information (vCard)
- >Payment and transaction links
- >Product packaging and inventory tracking
>> frequently asked questions
Q: What is a QR code?
A: A QR code (Quick Response code) is a two-dimensional barcode that can store text, URLs, and other data. It was invented in 1994 by Denso Wave for the automotive industry and is now used worldwide for various applications.
Q: What are QR code error correction levels?
A: QR codes have four error correction levels: L (Low, ~7% recovery), M (Medium, ~15%), Q (Quartile, ~25%), and H (High, ~30%). Higher levels allow the QR code to remain readable even if partially damaged or obscured, but require more modules (larger code).
Q: What is the maximum data capacity of a QR code?
A: The maximum capacity depends on the data type and error correction level. For numeric data: up to 7,089 characters. For alphanumeric: up to 4,296 characters. For binary/byte data: up to 2,953 bytes. Higher error correction reduces capacity.
Q: How do I scan a QR code?
A: Most modern smartphones can scan QR codes using the built-in camera app. Simply point your camera at the QR code and a notification will appear with the decoded content. You can also use dedicated QR code scanner apps.
Q: What is the difference between a QR code and a barcode?
A: Traditional barcodes are one-dimensional and store data in horizontal lines, holding up to ~25 characters. QR codes are two-dimensional, storing data in both horizontal and vertical patterns, allowing them to hold thousands of characters and support error correction.