QR & Barcode
QR code analysis, barcode validation, and encoding reference tools.
QR Data Analyzer
QR Capacity Reference
Wi-Fi QR Config Builder
vCard QR Builder
Error Correction Calculator
Barcode Format Reference
Barcode Validator
QR Data Formatter
Calculadora de Fatoriais e Combinações
Generate calendar event data for QR codes in iCalendar format
Calculadora de Proporção
Generate email QR data with mailto: URI and MATMSG format
Calculadora de Área e Perímetro
Generate SMS QR data with pre-filled messages
Calculadora de Volume e Área de Superfície
Generate geographic coordinates for QR codes
Calculadora Trigonométrica
Generate tel: URI QR data for phone calls
Conversor de Base Numérica
Calculadora de Frações
Learn QR & Barcode
Key concepts and practical guides to level up your workflow.
📖 Glossário
A 2D barcode with a bullseye finder pattern in the center, used on airline boarding …
A self-checking 1D barcode encoding digits and a few special characters, historically used in libraries …
A variable-length 1D barcode encoding uppercase letters, digits, and a few symbols, used in government …
A 2D barcode designed for high-speed industrial printing, using a rectangular dot grid pattern readable …
A 2D barcode designed for encoding Chinese characters efficiently, supporting multiple character sets and up …
A barcode format used on shipping cartons, encoding 14 digits in a compact interleaved pattern.
A number from 1 to 40 indicating the size of a QR code — version …
Smaller square patterns in larger QR codes that help correct distortion when scanning at an …
📘 Guias
QR codes bridge physical and digital experiences, but poorly generated codes fail to scan. This guide covers sizing, error correction, design customization, and testing best …
QR codes and traditional barcodes serve different purposes. This comparison covers data capacity, scanning requirements, and optimal use cases to help you choose the right …
Wi-Fi QR codes let guests connect to your network instantly by scanning with their phone camera. This guide covers the Wi-Fi QR format, security considerations, …
Branded QR codes with logos increase scan rates and reinforce brand identity. Learn how to customize QR codes with logos, colors, and shapes while maintaining …
Explore All Peasy Tools
15 specialized sites — one easy-peasy family.