Raster

ToBitmap(), ToPng(), ToJpeg(q), ToWebp(q)

Vector

ToSvg(), ToPdf() (physical size), ToEps(), Draw(SKCanvas, x, y)

ZPL

ToZplGraphic(x, y) – ^FO…^GFA…^FS for any Zebra label

EAN-13 with 5-digit add-on

var bc = new Barcode
{
    Symbology = Symbology.Ean13,
    Code = "978020137962",
    Supplement = "51995",          // 2- or 5-digit add-on to the right
    GuardBars = true,              // edge digits extend into the human-readable text
    Dpi = 203, BarWidth = 2, BarHeight = 70,
};

ITF-14 with bearer frame

var bc = new Barcode
{
    Symbology = Symbology.Itf14,
    Code = "0460123456789",        // 13 digits → check digit 3 is appended
    Dpi = 203, BarWidth = 2, BarHeight = 70,
    BearerBars = BearerBarStyle.Frame,   // default for ITF-14; HorizontalRules = top/bottom only
    BearerBarWidth = 4,
};

Swiss QR (QR-bill)

string payload = string.Join("\n",
    "SPC", "0200", "1", "CH4431999123000889012",
    "S", "Muster AG", "Bahnhofstrasse", "1", "8000", "Zürich", "CH",
    "", "", "", "", "", "", "",
    "1949.75", "CHF",
    "S", "Pia Rutschmann", "Marktgasse", "28", "9400", "Rorschach", "CH",
    "QRR", "210000000003139471430009017", "Rechnung 4711", "EPD");
var bc = new Barcode
{
    Symbology = Symbology.SwissQrCode,   // UTF-8, EC level M, Swiss cross in the centre
    Code = payload,
    Unit = BarcodeUnit.Millimeter, Dpi = 203,
    BarWidth = 0.5,
};

EPC QR (GiroCode)

// EPC069-12 (GiroCode / SEPA credit transfer): fields are validated (length, BIC, amount, IBAN without spaces)
string payload = QrExtras.EpcPayload(
    name: "Max Mustermann",
    iban: "DE89 3704 0044 0532 0130 00",
    amount: 12.50m,
    bic: "COBADEFFXXX",
    remittance: "Rechnung 4711");
var bc = new Barcode { Symbology = Symbology.EpcQrCode, Code = payload, Dpi = 203, BarWidth = 4 };

QrExtras.EpcPayload builds the payload (version 002, UTF-8) and validates lengths, BIC, amount and reference/remittance information.

Ultracode (color) & DotCode (dots)

var ultra = new Barcode { Symbology = Symbology.Ultracode, Code = "Ultracode 2026", Dpi = 203, BarWidth = 6 };
var dot = new Barcode { Symbology = Symbology.DotCode, Code = "DotCode 2026", Dpi = 203, BarWidth = 6 };
File.WriteAllBytes("ultracode.png", ultra.ToPng());   // coloured modules (cyan, magenta, yellow, green …)
File.WriteAllText("dotcode.svg", dot.ToSvg());        // DotCode as round dots

Rotated & colored

var bc = new Barcode
{
    Symbology = Symbology.Code128,
    Code = "ROT-270",
    Dpi = 203, BarWidth = 2, BarHeight = 60,
    Rotation = 270,
    ForeColor = new SKColor(0x0b, 0x6e, 0x4f),
    BackColor = new SKColor(0xe8, 0xf7, 0xf0),
    TextColor = new SKColor(0x0b, 0x6e, 0x4f),
};

QR with logo

// logo: e.g. SKBitmap.Decode("logo.png")
var bc = new Barcode
{
    Symbology = Symbology.QrCode,
    Code = "https://example.com/zplcore",
    Dpi = 203, BarWidth = 6,
    LogoImage = logo,                   // QR: error correction is raised to H
    LogoSizePercent = 22,               // width in % of the symbol
    LogoBackground = true,              // BackColor area behind the logo
    FinderShape = FinderShape.Rounded,  // Square, Rounded, Circle
    ForeColor = new SKColor(0x1d, 0x3b, 0x8a),
};

Round modules, dots, diamonds

var round = new Barcode
{
    Symbology = Symbology.QrCode, Code = "Runde Module", Dpi = 203, BarWidth = 6,
    ModuleShape = ModuleShape.RoundedSquare, FinderShape = FinderShape.Circle,
};
var dots = new Barcode
{
    Symbology = Symbology.DataMatrix, Code = "Punkte 2026", Dpi = 203, BarWidth = 8,
    ModuleShape = ModuleShape.Circle,    // Square, Circle, RoundedSquare, Diamond
};
var diamond = new Barcode { Symbology = Symbology.Aztec, Code = "Diamond", Dpi = 203, BarWidth = 7, ModuleShape = ModuleShape.Diamond };

Halftone QR: a picture in the code

// photo: e.g. SKBitmap.Decode("picture.jpg")
var thermal = new Barcode
{
    Symbology = Symbology.QrCode,
    Code = "https://zplcore.com",
    Dpi = 203, BarWidth = 6,            // module at least 3 dots (3 × 3 sub-modules)
    HalftoneImage = photo,              // error correction is raised to H
    HalftoneStrength = 0.6,             // share of the sub-modules that follow the image (0–1)
};
var colour = new Barcode
{
    Symbology = Symbology.QrCode, Code = "https://zplcore.com", Dpi = 300, BarWidth = 9,
    HalftoneImage = photo,
    HalftoneColor = true,               // image colours for PNG, SVG, PDF (thermal printing: black and white)
};
var check = thermal.CheckReadability(); // Readable, AppliedHalftoneStrength, Messages

Bar motifs: skyline, grass, your own image

var skyline = new Barcode
{
    Symbology = Symbology.Ean13, Code = "950600013435", Dpi = 300, BarWidth = 4, BarHeight = 240,
    BarArt = BarArt.Skyline,            // RoundedEnds, Skyline, Grass, Waves, Image
    BarArtHeightPercent = 30,           // upper part of the bars (5–40 %), the rest stays scan zone
};
var grass = new Barcode { Symbology = Symbology.Code128, Code = "ZPLCORE-2026", Dpi = 300, BarWidth = 4, BarHeight = 200, BarArt = BarArt.Grass };
var image = new Barcode
{
    Symbology = Symbology.Itf14, Code = "1540014128876", Dpi = 300, BarWidth = 4, BarHeight = 220,
    BarArt = BarArt.Image, BarArtImage = mountains,   // dark, opaque pixels keep the bar
};

The zplCore mark as QR code

// mark: branding/zplcore-mark-256-transparent.png, markOnWhite: branding/zplcore-mark-256.png
var logo = new Barcode            // level 1: the mark as logo, round modules and finders
{
    Symbology = Symbology.QrCode, Code = "https://zplcore.com", Dpi = 203, BarWidth = 6,
    LogoImage = mark, LogoSizePercent = 24,
    ModuleShape = ModuleShape.Dot, FinderShape = FinderShape.Rounded,
    ForeColor = new SKColor(0x1b, 0x2a, 0x3e),
};
var halftone = new Barcode        // level 2: the mark as halftone in the code (thermal printing)
{
    Symbology = Symbology.QrCode, Code = "https://zplcore.com", Dpi = 203, BarWidth = 6,
    QrVersion = 5,                  // more modules = finer picture
    HalftoneImage = markOnWhite, FinderShape = FinderShape.Rounded,
};
var colour = new Barcode
{
    Symbology = Symbology.QrCode, Code = "https://zplcore.com", Dpi = 300, BarWidth = 6, QrVersion = 5,
    HalftoneImage = markOnWhite, HalftoneColor = true, FinderShape = FinderShape.Rounded,
};
// the readable strength is printed: halftone.CheckReadability().AppliedHalftoneStrength
string zpl = "^XA" + logo.ToZplGraphic(30, 30) + halftone.ToZplGraphic(330, 30) + "^XZ";

Demo files (PNG, SVG, ZPL) in samples/artistic/; the live demo has the label as template and ZPL example (“Artistic QR codes”).

More examples and your own image

The artistic codes page shows a gallery of colour and thermal-print examples – every one read back after rendering – and a studio in which you upload your own logo or picture as logo QR, halftone QR or barcode motif and see the readability result right away. The examples are built by samples/DocsExamples/ArtisticShowcase.cs.

Light margin indicator, text mask, alignment

var ean = new Barcode
{
    Symbology = Symbology.Ean13, Code = "950600013435", Dpi = 203, BarWidth = 2, BarHeight = 60,
    LightMarginIndicator = true,                   // ‹ › in the quiet zones (GS1)
};
var pattern = new Barcode
{
    Symbology = Symbology.Code128, Code = "AB1234567", Dpi = 203, BarWidth = 2, BarHeight = 50,
    TextFormatPattern = "AA-999 99 99",            // mask: A a 9 # X x * ? each take one character
    HumanReadableAlignment = HumanReadableAlignment.Justify,   // Center, Left, Right, Justify
};
// numeric values also as composite format: TextFormatPattern = "{0:### ### ###}"

Base64/hex, tilde & ECI, QR version/mask, Structured Append

// pass data as Base64 or hex (binary data)
var b64 = new Barcode { Symbology = Symbology.QrCode, Code = "SGVsbG8gV29ybGQ=", CodeEncoding = CodeEncoding.Base64 };
var hex = new Barcode { Symbology = Symbology.DataMatrix, Code = "48 65 6C 6C 6F", CodeEncoding = CodeEncoding.Hex };

// Tilde-Escapes: ~~ ~dNNN (Byte) ~1 (FNC1) ~2IICC (Structured Append) ~eNNNNNN (ECI)
var eci = new Barcode { Symbology = Symbology.QrCode, Code = "~e000026Gr~d195~d188~d195~d159e", ProcessTilde = true };

// pin QR settings: version 1–40 (0 = automatic), mask 0–7 (-1 = automatic)
var fixedQr = new Barcode { Symbology = Symbology.QrCode, Code = "VERSION 5", QrVersion = 5, QrMask = 3, QrErrorCorrection = 'Q' };

// Structured Append: split data across several symbols (QR, Data Matrix, Aztec, MaxiCode, PDF417)
var part1 = new Barcode { Symbology = Symbology.QrCode, Code = "Teil eins / ", Dpi = 203, BarWidth = 4 }.StructuredAppend(1, 2);
var part2 = new Barcode { Symbology = Symbology.QrCode, Code = "Teil zwei", Dpi = 203, BarWidth = 4 }.StructuredAppend(2, 2);