The QR Code Blog
Everything you need to know about QR codes — how they work, when to use them, and how to get the most out of them.
Understanding QR Codes
How Do QR Codes Actually Work?
Learn how QR codes encode data, correct errors, and get read by your phone camera. A clear, jargon-light explanation of QR code technology.
Static vs Dynamic QR Code: Which One Do You Need?
Static vs dynamic QR codes explained. Learn when each type makes sense, what you can do with smart QR codes, and how to choose the right one.
What Is a Static QR Code?
Learn what a static QR code is, how it works, when to use one, and what its limitations are. Clear explanation with practical examples.
What Is a Dynamic QR Code? Meaning, How It Works, and When to Use One
What is a dynamic QR code? Learn the meaning, how the redirect works, how to make one, how often you can update it, and when to choose dynamic over static.
Do QR Codes Expire? (It Depends on the Type)
Do QR codes expire? Static QR codes last forever. Dynamic QR codes can expire, but that is tied to the feature that makes them editable and trackable.
How Much Data Can a QR Code Hold?
QR codes can store up to 4,296 characters, but less is better. Learn about data capacity, versions, and why shorter data scans more reliably.
QR Code vs Barcode: What's the Difference?
QR code vs barcode: understand the key differences in capacity, scanning, and use cases. Learn why QR codes dominate consumer applications.
Troubleshooting
QR Code Not Scanning? 7 Reasons and How to Fix It
QR code not scanning? Here are the 7 most common reasons why and exactly how to fix each one so your codes work every time.
Your QR Code Is Too Dense to Scan — Here's Why
QR code too complex or dense to scan? Learn why it happens and 5 practical ways to reduce density so your code scans reliably.
Minimum QR Code Size: How Small Can a QR Code Be and Still Scan?
Minimum QR code size explained: print at least 2 x 2 cm (0.8 in) for close-range scanning, use the 10:1 distance rule for posters, and see the size chart.
Can You Change QR Code Colors Without Breaking It?
Yes, you can customize QR code colors — but there are rules. Learn which color combinations work, which break scanning, and how to test.
How to Export Your QR Code as a High-Quality PNG
Learn how to export your QR code as a crisp, high-resolution PNG for digital and print use. Tips on size, resolution, and getting the best result.
Use Cases
How to Create a QR Code Menu for Your Restaurant
Learn how to create a QR code menu for your restaurant. Upload your menu, generate a smart QR code, and update it anytime without reprinting.
Replace Your Business Card with a QR Code vCard
Create a QR code vCard that saves your contact info directly to someone's phone. Update your details anytime with a smart QR code from MQRG.
Create a QR Code to Share Your WiFi Password
Generate a WiFi QR code so guests connect to your network instantly. No typing passwords. Works for cafes, Airbnbs, offices, and home.
QR Codes for Events: Tickets, Check-in, and Info
Use QR codes for event tickets, check-in, schedules, and feedback. Smart QR codes let you update event details after printing flyers.
One QR Code for All Your Social Media Links
Create a single QR code that links to all your social media profiles. Update links anytime with a smart QR code. Perfect for creators and brands.
How Small Businesses Use Smart QR Codes to Get More Customers
Practical ways small businesses use smart QR codes: Google reviews, menus, loyalty programs, and contact info. Real use cases with measurable results.
Real-Time QR Code Scan Tracking and Notifications: Get Alerted on Every Scan
Real-time QR code scan tracking and notifications: get a push alert the moment someone scans your smart QR code and track flyers, cards, and campaigns.
How to Create a QR Code With Multiple Links (One Code, Many URLs)
A QR code holds one URL, so a QR code with multiple links needs a workaround: a landing page or a multi-link QR code. See every option, free ones included.
QR Code on a Flyer or Poster: Best Practices
Learn the best practices for adding QR codes to flyers and posters — size, placement, contrast, CTAs, and why smart QR codes save you from costly reprints.
How to Make a QR Code on iPhone (3 Ways, No Computer Needed)
Learn how to make a QR code on iPhone three ways: the built-in Shortcuts action, a QR code generator app, or a web tool in Safari. Steps, limits, and tips.
Generate a QR Code for Any Link in Seconds
Paste a URL, generate a QR code, customize it, and export — all in seconds from your iPhone. Learn why smart QR codes let you change the link later.
Generate a QR Code That Links to a PDF
Learn how to create a QR code that opens a PDF — menus, brochures, manuals, and more. Smart QR codes let you swap the PDF without changing the code.
Marketing & Growth
What's the Real Impact of a QR Code on Your Business?
Discover how QR codes drive measurable business results — from offline-to-online traffic to lower customer friction. Real scenarios, no hype.
How to Track QR Code Scans (and Why You Should)
Learn what QR code scan data you can track — scan count, timing, location — and how smart QR codes from MQRG give you actionable analytics.
QR Code Marketing: How to Plan, Launch, and Track a Campaign
QR code marketing guide: where to place codes, how to write a call to action, run email and social campaigns, manage many codes, and track every scan.
QR Code Advertising: How to Use QR Codes in Ads That Get Scanned
QR code advertising guide: where QR codes work in print, billboard, TV, and digital ads, how to size them, write the CTA, and track which ad drove scans.