What is error correction?

Allows QR codes to be read when partially covered. Levels: L (7%), M (15%), Q (25%), H (30%).

What size should I use?

Min 2cm for close-up. 10cm for posters. Scanning distance is about 10x QR size.

Static QR codes never expire. Dynamic ones using redirect URLs can expire if the service stops.

What is the maximum amount of data a QR code can store?

A QR code can store up to 7,089 numeric characters, 4,296 alphanumeric characters, or 2,953 bytes of binary data. However, more data means a denser QR code that is harder to scan.

How do I create a QR code that links to a WiFi network?

Use the format WIFI:T:WPA;S:NetworkName;P:Password;; where T is the security type (WPA, WEP, or nopass), S is the SSID, and P is the password. Scanning auto-connects to the network.

QR Code Generator

Create QR codes for URLs, text, WiFi, and more

Text or URL

Network Name (SSID)

Password

Security

Email Address

Subject

Body

Phone Number

Message

Size

Error Correction

Foreground Color

Background Color

About QR Codes

QR (Quick Response) codes are two-dimensional barcodes that can store various types of data including URLs, text, contact information, and more.

Error Correction: Higher levels allow the QR code to be read even if partially damaged, but result in a denser code.

QR Code Generator

About QR Codes

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