Last Updated: September 2026

QR Code Learning Center

Every Link2QR tool and guide, in one place. Pick a section below, or use the FAQ if you just have a quick question.

Tools

The generator and every dedicated utility built around it.

QR Code Generator

The main tool: 18 content types, 18 art styles, logos, colors, and every export format.

Multi-link QR Code

One QR that opens up to 20 links, encoded in the URL fragment so nothing touches a server.

Batch Generator

Upload a CSV and download a QR code for every row, zipped.

QR Scanner

Scan with your camera or upload an image, right in the browser.

QR Decoder & Repair

Recover text from a damaged, blurry, or low-contrast QR image.

QR Reliability Checker

Audit a QR across contrast, quiet zone, and other scan-risk categories.

Templates

Ready-made presets for restaurants, events, business, payments, home, and social.

Embeddable Widget

Drop a live, editable QR generator onto your own site.

URL API

Open the generator pre-filled via URL parameters. No key, no signup - built for AI agents.

Getting Started

Start here if you are new to QR codes or making your first one.

What Is a QR Code?

A beginner-friendly overview of what QR codes are and how they work.

How QR Codes Work

The technical side: versions, modules, error correction, and capacity.

Link to QR Code

Turn any link into a QR code, and check it before you print.

How to Create a QR Code

Step-by-step walkthrough of the generator.

How to Scan a QR Code

Scanning with a phone camera on iOS and Android, no app required.

How to Insert a QR Code

Adding a QR image into Canva, Google Docs, Slides, Word, PowerPoint, and email signatures.

Do QR Codes Expire?

Why static codes never expire, and how to diagnose one that stopped working.

Are QR Codes Safe?

The real risks (and non-risks) of scanning a QR code.

Static vs Dynamic QR Codes

The honest tradeoffs, including when a paid dynamic code is actually the right call.

Printing and Design

Make a QR code that looks good and still scans once it is printed.

Artistic QR Codes

18 styles - dots, lines, waves, and more - that stay scannable.

Animated QR Codes

18 GIF effects plus an animated-SVG option, with a size comparison.

3D Printable QR Codes

STL export with module-size and slicer guidance for FDM printing.

Logo QR Codes

Centering a logo safely, using error-correction headroom, and what breaks a scan.

Print Size Calculator

The right physical size for any scanning distance, in inches, cm, or pixels at 300 DPI.

Formats and Types

Guides for a specific QR content type or payment/social platform.

WiFi QR Code

The WIFI: string format, WPA3, and hidden-network handling.

vCard / Business Card QR Code

vCard 3.0 fields and a ready business-card print preset.

Event QR Code

Calendar-invite QR codes that add an event with one scan.

Google Review QR Code

Send customers straight to your review form.

Restaurant QR Code

Menu, WiFi, and review codes, plus a printable sticker-sheet layout.

GS1 QR Code (Digital Link)

GTIN, lot, expiry, and serial encoded to the GS1 Digital Link standard.

QR Codes for Social Media

Exact link formats for Instagram, TikTok, YouTube, WhatsApp, and more.

SEPA / EPC QR Code

Bank-transfer QR codes for SEPA payments, with IBAN, amount, and reference filled in.

QR Codes for Payments

PayPal.me, Venmo, and Cash App link formats, encoded correctly.

QR Codes for Files & Forms

Linking a QR to a PDF, Google Form, or Drive file the right way.

Reference

Definitions and answers that do not fit a single guide.

QR Code Glossary

Terminology used across every guide on this site.

Complete FAQ

Every frequently asked question in one searchable page.

Industries

How different industries put QR codes to work.

QR Codes for Business

Marketing, payments, events, plus retail, real estate, healthcare, and education.

Blog

Longer-form posts and roundups.

Blog Index

All posts, newest first.

15 Creative QR Code Ideas

Practical ideas for businesses, restaurants, creators, and events.

9 Reasons Your QR Code Is Not Scanning

The most common causes, with a fix for each.

11 Ways to Use QR Codes at Events

RSVPs, photo sharing, WiFi, song requests, and registries.

Frequently Asked Questions

Where should I start if I am new to QR codes?

Start with What Is a QR Code for the basics, then How to Create a QR Code to build your first one on the generator.

Is everything on this site free to use?

Yes. Every tool and guide is free, with no sign-up, no account, and no limit on how many QR codes you generate.

Which page explains why my QR code will not scan?

Start with 9 Reasons Your QR Code Is Not Scanning in the blog, then run the code through the QR Reliability Checker for a category-by-category audit.

Do you have guides for a specific industry?

Yes - dedicated pages cover business, education, healthcare, real estate, and retail use cases under Industries above.