## What Is a QR Code?
A QR (Quick Response) code is a 2D barcode that can encode text, URLs, contact information, WiFi credentials, and more.
## What Can a QR Code Contain?
– **URL:** Links to a website or app
– **Plain text:** Messages, notes, instructions
– **WiFi:** Share network credentials without typing
– **vCard:** Contact information for business cards
– **Email:** Pre-filled email to a specific address
## Generate a Free QR Code
The QR Generator creates QR codes for all of the above. Everything runs in your browser.
**Tips for printing:**
1. Use H error correction level so a logo can overlay the center
2. Minimum print size: 2.5cm × 2.5cm
3. Always test the printed code before distributing
4. Use the PNG download at 512px+ for print quality
## Dynamic vs Static QR Codes
The QR codes generated here are **static** — the destination is baked into the code. For fixed uses, static codes are perfect.