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SnapOtter/apps/docs/tools/barcode-generate.md
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SnapOtterandGitHub ecc0a45f0e docs: per-tool reference pages for all 157 tools (+ fix docs build) (#261)
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description
description
Generate barcodes in Code 128, EAN-13, UPC-A, Code 39, ITF-14, and Data Matrix formats.

Barcode Generator

Generate barcode images from text input. Supports Code 128, EAN-13, UPC-A, Code 39, ITF-14, and Data Matrix formats.

API Endpoint

POST /api/v1/tools/barcode-generate

Accepts an application/json body (not multipart). The barcode is generated from the provided text, not from an uploaded file.

Parameters

Parameter Type Required Default Description
text string Yes - Text to encode in the barcode (1-256 characters)
type string No "code128" Barcode format: code128, ean13, upca, code39, itf14, datamatrix
scale integer No 3 Image scale factor (1-8)
includeText boolean No true Whether to render the text below the barcode

Example Request

curl -X POST http://localhost:1349/api/v1/tools/barcode-generate \
  -H "Authorization: Bearer si_your-api-key" \
  -H "Content-Type: application/json" \
  -d '{"text": "5901234123457", "type": "ean13", "scale": 4}'

Example Response

{
  "jobId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
  "downloadUrl": "/api/v1/download/a1b2c3d4-e5f6-7890-abcd-ef1234567890/barcode.png",
  "originalSize": 0,
  "processedSize": 4520
}

Notes

  • Unlike most tools, this endpoint accepts a JSON body, not multipart form data, since barcodes are generated from text rather than an uploaded file.
  • EAN-13 requires exactly 12 or 13 digits. UPC-A requires exactly 11 or 12 digits. If a check digit is omitted, it is calculated automatically.
  • Code 128 is the most flexible format and supports the full ASCII character set.
  • Data Matrix produces a 2D barcode suitable for encoding longer strings in a compact square.