Alignment Pattern
QR Code Alignment Pattern
Smaller square patterns in larger QR codes that help correct distortion when scanning at an angle.
QR & BarcodeAztec Code
Aztec Barcode
A 2D barcode with a bullseye finder pattern in the center, used on airline boarding passes and transit tickets.
QR & BarcodeCodabar
Codabar Barcode
A self-checking 1D barcode encoding digits and a few special characters, historically used in libraries and blood banks.
QR & BarcodeCode 39
Code 39 Barcode
A variable-length 1D barcode encoding uppercase letters, digits, and a few symbols, used in government and defense.
QR & BarcodeDotCode
DotCode 2D Barcode
A 2D barcode designed for high-speed industrial printing, using a rectangular dot grid pattern readable even at low resolution.
QR & BarcodeHan Xin Code
Han Xin 2D Barcode
A 2D barcode designed for encoding Chinese characters efficiently, supporting multiple character sets and up to 7,827 numeric digits.
QR & BarcodeITF-14
Interleaved Two of Five 14-digit
A barcode format used on shipping cartons, encoding 14 digits in a compact interleaved pattern.
QR & BarcodeQR Code Version
QR Code Version (Size)
A number from 1 to 40 indicating the size of a QR code — version 1 is 21x21 modules, each version adds 4.
QR & BarcodeModule
QR Code Module
The smallest square unit (dark or light) in a QR code, equivalent to a single pixel in the code's grid.
QR & BarcodeError Correction Level
QR Code Error Correction
The amount of redundant data in a QR code: L (7%), M (15%), Q (25%), or H (30%) recovery capacity.
QR & BarcodeFinder Pattern
QR Code Finder Pattern
The three large squares in the corners of a QR code that help scanners detect and orient the code.
QR & BarcodeQuiet Zone
QR Code Quiet Zone
The blank margin around a QR code (minimum 4 modules wide) required for reliable scanning.
QR & BarcodeData Matrix
Data Matrix Code
A 2D barcode using a square or rectangular pattern, commonly used for small item marking in manufacturing.
QR & BarcodeEAN-13
European Article Number 13-digit
A 13-digit barcode standard used worldwide for marking retail products at the point of sale.
QR & BarcodeUPC-A
Universal Product Code Type A
A 12-digit barcode format used primarily in North America for tracking trade items in retail stores.
QR & BarcodePDF417
PDF417 Barcode
A stacked 2D barcode capable of encoding large amounts of data, used on driver's licenses and ID cards.
QR & BarcodeMicro QR
Micro QR Code
A compact QR code variant with a single finder pattern, designed for applications where space is limited.
QR & BarcodeISBN
International Standard Book Number
A 13-digit numeric identifier for books, rendered as an EAN-13 barcode on book covers.
QR & BarcodevCard QR
vCard QR Code
A QR code encoding contact information in vCard format, scannable to add a contact directly to a phone.
QR & BarcodeWiFi QR
WiFi QR Code
A QR code encoding WiFi network credentials (SSID, password, encryption type) for instant device connection.
QR & BarcodeMasking Pattern
QR Code Masking Pattern
One of eight patterns applied to QR code data modules to ensure even distribution of dark and light areas.
QR & BarcodeReed-Solomon
Reed-Solomon Error Correction
The error-correcting code used in QR codes that enables data recovery even when part of the code is damaged.
QR & BarcodeGS1 DataBar
GS1 DataBar Barcode
A compact barcode family used for small items like fresh produce and coupons, encoding GS1 Application Identifiers.
QR & BarcodeMaxiCode
MaxiCode 2D Barcode
A fixed-size 2D barcode with a central bullseye pattern used by UPS for automated package sorting and tracking.
QR & BarcodeQR Code Capacity
QR Code Data Capacity
The maximum data a QR code can store, ranging from 7,089 numeric characters to 4,296 alphanumeric characters at the largest version.
QR & BarcodeStructured Append
QR Code Structured Append
A QR code feature that splits data across up to 16 linked QR codes, reconstructed when all are scanned in sequence.
QR & BarcodeISSN Barcode
International Standard Serial Number Barcode
An EAN-13 barcode encoding the ISSN of periodicals, printed on magazine and journal covers for point-of-sale identification.
QR & BarcodePharmacode
Pharmaceutical Binary Code
A 1D barcode used in pharmaceutical packaging that encodes a single number for automated packaging verification.
QR & BarcodeGTIN
Global Trade Item Number
A GS1 identifier for products available in 8, 12, 13, or 14-digit formats, encoded in barcodes like EAN-13 and UPC-A.
QR & BarcoderMQR
Rectangular Micro QR Code
A rectangular QR code variant (ISO 23941) optimized for narrow or elongated spaces like labels and packaging.
QR & BarcodeCode 128
Code 128 Barcode
A high-density 1D barcode encoding all 128 ASCII characters, widely used in shipping and logistics.
QR & Barcode