QR Code Generator
How QR Code Generation Works
Text input is encoded into a QR code matrix and rendered as an image.
- 1
Encode input data
The input text is encoded using the QR code encoding algorithm with the selected error correction level.
- 2
Generate matrix
The encoded data is arranged into a square grid of black and white modules.
- 3
Render as image
The QR matrix is rendered as a PNG image with the specified size and colors.
FAQ
What is a QR code?
A QR (Quick Response) code is a two-dimensional barcode that can store text, URLs, contact information, and other data. It can be scanned by smartphone cameras and QR reader apps.
What is error correction level?
Error correction allows a QR code to be read even if partially damaged. Level L recovers 7%, M recovers 15%, Q recovers 25%, and H recovers 30% of data. Higher levels produce larger QR codes.
How much data can a QR code hold?
A QR code can hold up to 4,296 alphanumeric characters or 7,089 numeric characters. The actual capacity depends on the error correction level and the type of data being encoded.
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