Barcode generator API. Five formats, one call.
Pass any string and a format — get back a ready-to-use barcode as a raw PNG or base64-encoded JSON. Code 128, Code 93, Code 39, EAN-8, and EAN-13 supported.
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What the Barcode Generator API Does
One endpoint. Any of five industry-standard barcode formats, returned as a PNG image or base64 JSON.
Structured output
The base64 endpoint returns the barcode image already encoded, along with the format used and pixel dimensions — ready to embed inline or store alongside other record data.
{
"image": "iVBORw0KGgoAAAANSUhEUgAA...",
"type": "code128",
"width": 300,
"height": 100
}
Simple to integrate
Two query parameters: data and type. No SDK, no configuration. A single GET request returns a print-ready barcode.
GET /v1/technology/barcode/base64?data=123456789&type=code128
Host: requiems.xyz
requiems-api-key: YOUR_API_KEY
Generate Barcodes for Any Workflow
From point-of-sale systems to shipping labels — any product that needs scannable codes can use the Barcode Generator API.
Print barcodes for point-of-sale systems
Generate Code 128 or EAN-13 barcodes for product SKUs on demand, without maintaining a static image library.
Label shipments and packages
Create scannable shipping labels programmatically as orders are processed, matching the format your carrier requires.
Track assets and stock
Assign a unique barcode to every asset or stock item and regenerate labels instantly when items are re-tagged.
Power ticketing and check-in
Generate a unique Code 128 barcode per ticket and scan it at check-in for fast, reliable entry validation.
Tag books and equipment
Print EAN-13 or Code 39 barcodes for catalog items so existing scanner hardware can check items in and out.
Add barcode generation to your platform
Offer on-the-fly barcode generation inside your product — inventory, ticketing, or asset-management tools — via a single authenticated API call.
Use together with complementary APIs.
Barcode Generator works even better when paired with other Requiems APIs.
Benefit: Offer both linear barcodes and QR codes from the same platform.
Outcome: Cover every scanning use case — product SKUs with barcodes, URLs and rich data with QR codes.
Benefit: Generate realistic customer or member profiles paired with sample barcodes.
Outcome: Populate demo environments and test datasets with plausible identities and scannable codes in one pass.
Benefit: Decode or re-encode barcode payloads alongside other Base64 data in your pipeline.
Outcome: Handle image and text encoding needs through one consistent developer workflow.
Frequently Asked Questions
Still have questions? Contact support
Add barcode generation to your product with Requiems.
One API key. Barcode generator, QR codes, and 50+ other developer APIs.