QRStudio Blog
Practical guides, tips, and best practices for creating effective QR codes.
QR Code Security: How Quishing Scams Work
QR phishing (“quishing”) hides malicious links inside codes. How the scams work, the four patterns to know, and how to spot a fake before you tap.
7 min read ReferenceQR Code Sizes for Every Medium
How big should a QR code be? The 1/10 rule plus a print-ready reference table for cards, flyers, posters, windows, vehicles and billboards.
6 min read DesignDesigning a Branded QR Code That Still Scans
Adding a logo and colours can quietly break a code. A before-and-after and five rules to brand it without losing a single scan.
6 min read BackgroundQR Code Payments Around the World: UPI, PIX & More
From India's UPI to Brazil's PIX to China's super-app wallets — how scan-to-pay differs by country, and the one safety rule everywhere.
7 min read How-ToHow to Track QR Code Scans Without a Paid Service
Skip the monthly “dynamic QR” fee: track scans for free with UTM tags and Google Analytics, step by step.
6 min read TechnicalQR Codes vs NFC vs Short Links: Which Should You Use?
Three ways to bridge print and digital, compared on cost, reach, offline use and editability — with a simple rule for picking.
6 min read AccessibilityQR Code Accessibility: Making Codes Everyone Can Use
A QR code can quietly exclude people. Contrast, size, placement, and the text alternative that makes it inclusive.
6 min read BusinessQR Code Menus for Restaurants: A No-Nonsense Guide
Are QR menus actually good for restaurants? An honest look at the pros, the cons, and how to set one up for free.
7 min read GuideHow to Make a QR Code for Wi-Fi
Let guests and customers connect to your Wi-Fi instantly by scanning a QR code. Step-by-step instructions included.
4 min read Best PracticesQR Code Best Practices for Print
Printing QR codes on business cards, flyers, or posters? Learn the sizing, resolution, and testing tips that matter.
5 min read DesignHow to Add a Logo to Your QR Code
Brand your QR codes with a custom logo. Learn about sizing, error correction, and design tips for scannable results.
4 min read TechnicalSVG vs PNG QR Codes: Which Should You Use?
Understand the differences between vector and raster QR codes and when to choose each format.
4 min read BusinessQR Codes for Small Business: A Practical Guide
From menus to business cards to storefront signs — discover how small businesses use QR codes to connect with customers.
5 min read TechnicalStatic vs Dynamic QR Codes: When to Use Each
Trade-offs in privacy, cost, editability, and analytics — and a simple rule for picking the right type the first time.
7 min read TechnicalUnderstanding QR Code Error Correction Levels
What L, M, Q, and H actually mean — and how to choose the right level without making the code unnecessarily dense.
6 min read TroubleshootingWhy Won’t My QR Code Scan? A Troubleshooting Guide
Almost every failed scan is one of seven specific problems. Walk through them in order and fix the issue before reprinting.
7 min read GuideHow to Create a vCard QR Code for Contact Sharing
Skip the retyping. A vCard QR code lets recipients save your full contact details to their phone in one scan.
6 min read BackgroundA Brief History of QR Codes
From a 1994 Toyota factory floor to global payment rails — how a thirty-year-old format became an overnight success, and where it goes next.
6 min read