ZPL Barcode Generator

Create locally generated ZPL for compatible thermal labels with printer DPI, label dimensions and a dot-based preview.

Labels

Create accurate label sheets or printer-ready thermal jobs.

Local export

One value per line Optional label and secondary field after tabs

Paste tab-separated rows, use the current code, or prepare spreadsheet and sequence data in Batch.

Print format Code format Template

Saved settings

PresetName

Import JSON

Only layout and printer settings are saved. Label values are never stored.

Your labels appear here.

Processed locally. ZPL values and printer settings stay in this browser.

Prepare a thermal-label ZPL job

ZPL (Zebra Programming Language) is a command language used by compatible thermal label printers. Set the data, supported symbol type, media dimensions and printer resolution before local export.

Set printer DPI

DPI means dots per inch: the printer resolution used to convert physical label dimensions into dots. Use 203, 300, 600 or a custom 72–2400 DPI value.

Choose label dimensions

Configure width, height and module width for the target media.

Export locally

Download a combined job or an individual-file ZPL ZIP for supported label sets.

Create a ZPL job with measurable settings

Read the target printer resolution and media dimensions instead of estimating them from a screenshot.

Choose a supported carrier, enter its value and set module width within the tool guidance.

Review the dot-based preview and resolve any size warning before download.

Send a short test job to the target printer and scan the physical result before producing a batch.

Printer resolution reference
DPI	Typical use	Why it matters
203	Common shipping and warehouse thermal printers	Produces fewer dots per millimetre, so narrow bars need more physical width.
300	Denser general-purpose labels	Allows finer placement while preserving measurable bar widths.
600	High-resolution compatible printers	Uses more dots for the same physical label; the configured printer must match.
Custom	A device whose documented resolution differs	The tool accepts 72–2400 DPI, but the actual printer setting remains authoritative.

Worked example: millimetres are not printer dots

Media: 50 × 25 mm
Resolution: 203 dpi
Value: ASSET-0042
Format: Code 128

At 203 dpi, a 50 × 25 mm label is approximately 400 × 200 dots after rounding. Set those dimensions and the actual printer resolution in Thermal printer mode, then inspect the preview before downloading ZPL. A 300 dpi printer needs different dot dimensions for the same physical label. ZPL is a printer command format, not a universal driver; send a small test through your established print workflow.

Specifications

Supported carriers

QR, Code 128, Code 39, EAN-13, EAN-8, UPC-A and ITF.

Output

ZPL for compatible printers; PDF is available from the sheet-label workflow.

Important limit

Printer firmware, fonts, darkness, media and scanner conditions still need a physical test.