Micro QR Code

Micro QR is a smaller version of the standard QR code, designed for applications where space is limited.

Basic Usage

using CodeGlyphX;
using CodeGlyphX.Rendering;

// Generate Micro QR
var micro = MicroQrCodeEncoder.EncodeAlphanumeric(
    "ABC123",
    QrErrorCorrectionLevel.L);

OutputWriter.Write(
    "microqr.png",
    MatrixBarcode.Render(micro.Modules, OutputFormat.Png));

Decode modules or images

MicroQrDecoder.TryDecode(BitMatrix, ...) decodes an exact 11x11, 13x13, 15x15, or 17x17 module grid. Pixel overloads recognize RGBA32 or BGRA32 frames directly; TryDecodeImage first decodes a supported raster image.

byte[] image = File.ReadAllBytes("microqr.png");

if (MicroQrDecoder.TryDecodeImage(
        image,
        out MicroQrDecoded decoded,
        out MicroQrPixelDecodeInfo info)) {
    Console.WriteLine(decoded.Text);
    Console.WriteLine($"Rotation: {info.Geometry.RotationDegrees:0.#} degrees");
}

The recognizer handles all M1-M4 sizes, quarter turns, arbitrary in-plane rotation, inverted symbols, and mirrored input. It returns the symbol quadrilateral in source-image coordinates. For a unified raw-frame or encoded-image workflow, request SymbolFormat.MicroQrCode from SymbolScanner; the scanner also converts Gray8/Gray16, RGB/BGR, ARGB/ABGR, and RGB565 frames before recognition.

Comparison with Standard QR

Micro QR image scanning currently returns one result per frame. The generated capability table is the source of truth for this boundary.