wxQRcode - QR Code Generator

wxQRcode is a powerful QR code generator that supports the QR Code Model 2 standard with advanced customization options. wxQRcode ensures optimal QR code generation with a balance of compactness, error correction, and encoding efficiency.

Key Features:

✅ Full QR Code Model 2 Standard Support – Generates QR codes from version 1 to 40, automatically selecting the smallest possible version.

✅ Flexible QR Code Dimensions – The width and height of a QR code, measured in modules, range between 21 and 177 (inclusive). This is equal to QR code version * 4 + 17.

✅ 4 Error Correction Levels – Uses Reed-Solomon error correction with up to 30% data recovery. The error correction level of the result may be higher than the selected level if this can be achieved without increasing the QR code version.

• LOW: 7% of data can be restored.
• MEDIUM: 15% of data can be restored.
• QUARTILE: 25% of data can be restored.
• HIGH: 30% of data can be restored.

✅3 Character Encoding Modes – Supports numeric, alphanumeric, and binary (UTF-8) character encoding. Detects and applies the most efficient character encoding mode based on input.

• NUMERIC: 0-9
• ALPHANUMERIC: 0–9, A–Z (upper-case only), space, $, %, *, +, -, ., /, :  
• BINARY or BYTE: other UTF-8 characters

✅ Information Capacity – Stores up to 7089 numeric, 4296 alphanumeric, or 2953 binary characters, depending on the error correction level

The maximum number of characters a QR code can store depends on the character encoding mode (N, A or B) and the error correction level (L, M, Q or H).

• L: 7089 - N, 4296 - A, 2953 - B
• M: 5596 - N, 3391 - A, 2331 - B
• Q: 3993 - N, 2420 - A, 1663 - B
• H: 3057 - N, 1852 - A, 1273 - B

For binary mode (B), the maximum character counts mentioned above for each error correction level are specified for 1-byte UTF-8 characters. Thus, it should be taken into account that 2, 3, or 4-byte UTF-8 characters occupy 2, 3, or 4 times more space.

✅ Export of QR code to PNG up to a size of 8192 x 8192.

✅ Customizable QR code colors and the ability to create a QR code with a transparent background.