Barcode Generator

Encode a value into any of 35 barcode and QR symbologies and return the rendered image. Supports QR Code, Data Matrix, PDF417, Aztec, EAN-13, UPC-A, Code 128/39/93, ITF-14 and more. Returns SVG markup by default (or a data: URI when asked), plus a link to the online generator pre-filled with the same value. Use "type" with the canonical name from list_barcode_types; common spellings like "qr" or "code-128" are accepted. Linear formats such as EAN-13 enforce strict charset and length rules and will fail on invalid input.

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "description": "Barcode symbology, e.g. \"Qrcode\", \"Ean13\", \"Code128\", \"Datamatrix\", \"Pdf417\", \"gs1-128\"."
    },
    "value": {
      "type": "string",
      "maxLength": 1024,
      "description": "The data to encode — a URL, product number, tracking code, phone number, Wi-Fi string, etc."
    },
    "caption": {
      "type": "string",
      "description": "Optional human-readable text drawn under the symbol. Defaults to the value itself."
    },
    "format": {
      "type": "string",
      "enum": [
        "svg",
        "data-uri"
      ],
      "default": "svg",
      "description": "Output encoding. \"svg\" returns XML markup; \"data-uri\" returns a ready-to-embed data: URL."
    },
    "errorCorrection": {
      "type": "string",
      "enum": [
        "L",
        "M",
        "Q",
        "H"
      ],
      "default": "M",
      "description": "QR error-correction level. Higher levels survive more damage but produce a denser symbol. Ignored by linear formats."
    },
    "height": {
      "type": "number",
      "minimum": 20,
      "maximum": 400,
      "default": 100,
      "description": "Symbol height in pixels (linear formats mainly)."
    },
    "showText": {
      "type": "boolean",
      "default": true,
      "description": "Draw the human-readable caption under the symbol."
    }
  },
  "required": [
    "type",
    "value"
  ]
}

List every symbology this server can generate (35 formats), grouped by family, with a one-line summary and sample data for each. Call this first when you are unsure which "type" to pass to generate_barcode. Optionally narrow by family (e.g. "EAN / UPC", "2D Barcodes") or category ("linear", "stacked", "2d").

{
  "type": "object",
  "properties": {
    "family": {
      "type": "string",
      "description": "Case-insensitive substring match on the family name, e.g. \"Code 128\", \"2D\", \"EAN\"."
    },
    "category": {
      "type": "string",
      "enum": [
        "linear",
        "stacked",
        "2d"
      ],
      "description": "Restrict to one structural class of symbology."
    }
  },
  "required": []
}

Return the full technical reference for one symbology: character set, data length, check digit rules, X-dimension and quiet-zone guidance, print ratio, magnification, governing standard, inventor and year, typical applications, FAQ, and related formats. Use this to pick a format for a requirement, or to find out why generate_barcode rejected a value.

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "description": "Barcode symbology to look up, e.g. \"Qrcode\", \"Ean13\", \"gs1-128\", \"pdf417\"."
    }
  },
  "required": [
    "type"
  ]
}