How to Generate a QR Code
Type or paste the URL, text, phone number, or Wi-Fi credentials you want to encode into a QR code.
Adjust the size and error correction level if needed.
Click Download to save the QR code as a PNG image.
What Is a QR Code?
A QR code (Quick Response code) is a two-dimensional barcode that stores information in a pattern of black and white squares. Invented in 1994 by Denso Wave, QR codes can store up to 4,296 alphanumeric characters. They include built-in error correction so they can be scanned even when up to 30% damaged. Modern smartphones scan QR codes instantly using their camera, making them a convenient bridge between physical and digital content.
Popular Uses for QR Codes
Restaurants use QR codes for digital menus. Businesses print them on business cards linking to their website. Event organizers use them for paperless tickets. Retailers link QR codes on packaging to user manuals and promotions. Teachers share classroom resources via QR codes on worksheets. Wi-Fi networks can be shared instantly by encoding credentials into a QR code.
Frequently Asked Questions
What can I encode in a QR code?
URLs, plain text, email addresses, phone numbers, Wi-Fi credentials, vCard contacts, and more.
How much data can a QR code hold?
Up to 4,296 alphanumeric characters. For best scanning results, keep content under 300 characters.
Do QR codes expire?
QR codes themselves never expire. However, if it points to a URL, the link could become unavailable if the website goes down.
What is error correction?
QR codes use Reed-Solomon error correction at four levels: L (7%), M (15%), Q (25%), and H (30%). Higher levels work even when partially damaged.