Scan & Generate
QR Code & Barcode Blog
Guides, tutorials, and tips on QR codes, barcodes, and scanning technology — for businesses, developers, and everyday users.
What is a QR Code? History, Types & How It Works
Learn what QR codes are, how they store data, the different types (static, dynamic, micro), error correction levels, and why QR codes are used everywhere today.
Types of Barcodes Explained: 1D vs 2D Codes
Learn the difference between 1D barcodes (EAN-13, UPC-A, Code 128, Code 39) and 2D codes (QR Code, Data Matrix, PDF417, Aztec). Complete guide with use cases.
How to Create a WiFi QR Code (Step-by-Step Guide)
Step-by-step guide to creating a WiFi QR code. Share your WiFi password with guests by letting them scan a QR code to connect automatically. Free tool included.
QR Code Size Guide: Minimum Size, Print Guidelines & Best Practices
Learn the ideal QR code size for printing on business cards, posters, and packaging. Includes minimum size requirements, scanning distance formulas, and resolution tips.
Static vs Dynamic QR Codes: Which Should You Use?
Understand the difference between static and dynamic QR codes, when to use each, and how dynamic QR codes let you change the destination URL without reprinting.
How to Add a QR Code to Your Business Card (2026 Guide)
Learn how to create and add QR codes to business cards. Covers vCard QR codes, design placement tips, printing specs, and the best free tools to use.
Barcode Types Compared: EAN-13 vs UPC-A vs Code 128 vs QR Code
A complete comparison of barcode types — 1D barcodes (EAN-13, UPC-A, Code 128, Code 39) vs 2D codes (QR Code, Data Matrix). Learn which format to use and when.
How to Scan QR Codes on iPhone & Android (2026 Guide)
Learn how to scan QR codes on any smartphone — iPhone, Android, and tablets. Covers built-in camera scanning, Google Lens, and third-party apps.
QR Codes for Restaurant Menus: Setup Guide & Best Practices
Learn how to create QR code menus for your restaurant. Covers free setup methods, design tips, table placement, and common mistakes to avoid.
How to Create a QR Code for a Link (URL) — Step-by-Step Guide
Learn how to create a QR code for any URL or website link. Free, instant, and works with any link — social media, Google Maps, YouTube, documents, and more.