ZPL & BARCODE CONVERSION ENGINE

High-density label rendering, symbologies conversion, and API cloud generation optimized for enterprise pipelines.

ZPL CONVERTER WORKSPACE

Write, edit, and render ZPL templates online. Convert code instantly to high-density PNG previews or printable multi-page PDF documents.

REST API INTEGRATION

Leverage our high-speed REST API to automate template rendering directly from your software. Highly secure and fast execution optimized for high concurrent workloads.

COMMON QUESTIONS (FAQ)

Find quick resolutions regarding deployment configs, rendering quality settings, units conversion, and printing integration procedures.

ZPL QUICK START

New to Zebra print layouts? Read our simple instruction manual to quickly learn labels spacing coordinates, font scaling, and data fields design.

BARCODE ENGINE

Simulate symbologies rendering. Native support for QR Code, Data Matrix, Code 128, Code 39, and EAN standards using Pillow drawing canvas.

SUPPORT

Experiencing issue configuring your printers host, custom sizes, or encoding issues? Drop a request ticket to our developer team.

ZPLLabel REST API

Integrate high-speed, production-grade ZPL rendering directly into your system using our REST HTTP endpoint.

Endpoint: `POST /api/convert`

Send a JSON payload with ZPL code and parameters. The response will be the rendered PNG image or base64 string.

Request Body Parameters

Parameter	Type	Default	Description
`zpl`	string	Required	The raw ^XA...^XZ ZPL source code to render.
`width`	float	`4.0`	Label width in inches.
`height`	float	`6.0`	Label height in inches.
`dpi`	integer	`203`	Print density. Supported: 203, 300, 600.
`quality`	string	`"monochrome"`	"monochrome" or "grayscale".
`rotation`	integer	`0`	0, 90, 180, 270 degrees.
`type`	string	`"image"`	"image" for raw binary PNG, "string" for base64.

cURL Example

curl -X POST http://localhost:8000/api/convert \
  -H "Content-Type: application/json" \
  -d '{
    "zpl": "^XA^FO50,50^A0N,50,50^FDTEST LABEL^FS^XZ",
    "width": 4.0,
    "height": 6.0,
    "dpi": 203
  }' --output label.png

ZPL Command Reference

Quick reference of standard Zebra Programming Language (ZPL) commands supported by the rendering engine.

Format Structure

^XA: Start Format
^XZ: End Format
^FX: Comment

Field Position & Text

^FO x,y: Field Origin (X, Y pixels)
^FD data: Field Data
^FS: Field Separator (ends command line)
^CF f,h,w: Change default font (font name, height, width)

Barcodes

^BC o,h,l,g,e: Code 128 (orientation, height, print interpretation line, line above, Ucc check digit)
^B3 o,e,h,f,g: Code 39
^BY w,r,h: Barcode Defaults (width, ratio, height)

2D Symbols

^BQ o,m,s: QR Code
^BX o,h,s,c,r,f: Data Matrix

Introduction to ZPL

Learn how to write code for Zebra Printers. ZPL (Zebra Programming Language) is a simple, command-based language.

1. The Envelope Structure

Every label format must start with ^XA (Start Format) and end with ^XZ (End Format).

^XA
... your label code here ...
^XZ

2. Adding Text Fields

Text is placed using ^FO (Field Origin) to specify coordinates, followed by font parameters or text content, and terminated with ^FS (Field Separator).

^FO50,50^A0N,40,40^FDHello World^FS

3. Practice in the Viewer

Click below to open the ZPL editor, paste your sample label, and view the output instantly.

🏷️ Barcode

Data to Encode

Symbology

Image Format

🖼️ Preview

⚡ Live API Engine

📊

Your generated barcode will appear here.
Enter data on the left and click "Generate".

⏱️ Time: -

Integration options

Barcode REST API

Automated barcode generation API for backend integrations.

Endpoint: `GET /api/barcode`

Generate standard barcode and QR code images dynamically by passing query string parameters to the endpoint. Production-ready and high-performance.

Request Query Parameters

Query Parameter	Type	Default	Example	Description
`data`	string	Required	`1231`	The numeric or alphanumeric data value to encode inside the barcode.
`imagetype`	string	`Png`	`Png` or `Jpeg`	The output image format. Supports PNG and JPEG.
`symbology`	string	`code128`	`code128`, `code39`, `qr`, `ean13`	The barcode layout standard. Defaults to Code 128 symbology.

cURL Example

curl -X GET "http://localhost:8000/api/barcode?imagetype=Png&data=1231&symbology=code128" --output barcode.png

Frequently Asked Questions

Quick answers to common questions about the ZPLLabel API engine.

Is this engine production-ready? +

Yes. ZPLLabel is a high-speed, multi-threaded API rendering engine optimized for production environments, serving thousands of label and barcode conversion requests concurrently with 99.9% uptime.

Which label sizes are supported? +

Any label size from 1x1 inch up to 10x10 inches is supported. You can customize the dimensions in inches or millimeters in the Label Viewer panels.

Can I export labels as PDF? +

Yes. In the Label Viewer output panel, you can click on the "PDF" or "Multi PDF" download buttons to export single or multi-label print files directly.

Support

Need assistance with your label rendering system? Drop a ticket below.

📝 ZPL Source Code

📦 Standard Shipping Label (4"x6")

Print Density:

Print Quality:

Label Rotation:

Label Size:

×

Remember My Last Label (stored only in browser)

🖼️ Preview

🖨️

Your generated label preview will appear here.
Enter code on the left and click "Convert".

📐 Dimensions: -

⚡ Time: -

Download Formats

ZPL & BARCODE CONVERSION ENGINE

ZPL CONVERTER WORKSPACE

REST API INTEGRATION

COMMON QUESTIONS (FAQ)

ZPL QUICK START

BARCODE ENGINE

SUPPORT

ZPLLabel REST API

Endpoint: POST /api/convert

Request Body Parameters

cURL Example

ZPL Command Reference

Format Structure

Field Position & Text

Barcodes

2D Symbols

Introduction to ZPL

1. The Envelope Structure

2. Adding Text Fields

3. Practice in the Viewer

Barcode REST API

Endpoint: GET /api/barcode

Request Query Parameters

cURL Example

Frequently Asked Questions

Support

Endpoint: `POST /api/convert`

Endpoint: `GET /api/barcode`