What is ZPL and how does it work?

ZPL (Zebra Programming Language) is a printer command language developed by Zebra Technologies. You send plain-text commands — starting with ^ or ~ — directly to a thermal printer over USB, serial, or TCP port 9100. Each command controls an element of the label: position, text, barcodes, graphics, and print settings.

Why isn't my ZPL rendering correctly in the preview?

The most common causes are: missing ^XA at the start or ^XZ at the end of your label; commands not on the same line as their field origin (^FO must precede ^FD on the same label); or using unsupported commands like ^LL or ^PO which control physical printer behavior and have no visual equivalent in a browser preview.

Does this tool support QR codes?

Yes. Use the ^BQ command followed by ^FD to specify your QR code data. Example: ^FO50,50^BQN,2,5^FDQA,https://example.com^FS. The QA, prefix tells the printer (and this tool) the data type. The magnification parameter (third value in ^BQ) controls the size.

Can I preview Zebra label designs for free without a printer?

Yes — that's exactly what this tool is for. Paste your ZPL code into the editor and click Render Label to see a visual preview of your 4×6 label. No Zebra printer, no software installation, and no signup required. You can also download the preview as a PNG.

What barcode types does this ZPL preview tool support?

This tool supports Code 128 (^BC), QR Code (^BQ), Code 39 (^B3), and EAN-13 (^BE). These cover the vast majority of barcode use cases for shipping, retail, and inventory labels. Additional symbologies like PDF417, Data Matrix, and Aztec are not yet supported in the browser preview.

Is this tool compatible with ZPL II?

Yes. ZPL II is the current version of the language and is backwards-compatible with ZPL. All commands shown in the reference table below are ZPL II commands. The preview tool handles the most commonly used ZPL II commands including text, barcodes, boxes, and circles.

What is the difference between ZPL and EPL?

ZPL (Zebra Programming Language) and EPL (Eltron Programming Language) are both Zebra printer languages. ZPL is the newer, more powerful standard and is used on most modern Zebra printers (ZT, ZD, ZC series). EPL is an older language used on legacy Zebra/Eltron models. Prynta Co supports both ZPL and EPL in its Command Center.

How do I send ZPL to a Zebra printer from a browser?

Prynta Co lets you send ZPL commands directly from your browser using WebUSB (for USB-connected printers), Web Serial (for serial printers), or a network TCP connection to port 9100. No drivers or companion software needed — just open Prynta Co in Chrome or Edge and connect your printer.

Free Tool — No Signup Required

Free ZPL Viewer

Paste your ZPL code and see your label rendered instantly — no signup required

Supports Code 128 · QR Code · EAN-13 · Code 39 · Text · Graphics

pryntaco.com/tools/zpl-preview

SizeDPIQualityDarkness10

ZPL Code

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Need help with commands? ZPL Command Reference

Label Preview

4″ × 6″ · 203 DPI

Preview shows an approximate rendering of your ZPL. Actual printer output may vary by printer model and DPI.

Who Uses This ZPL Preview Tool?

Developers & Integrators

Test ZPL output from your system before sending commands to hardware. Catch formatting errors early and iterate without wasting labels or printer time.

Warehouse & Logistics Teams

Debug label templates quickly without tying up production printers. Verify barcodes, text positions, and layout before deploying to the floor.

Print Shops & Label Designers

Preview label designs in-browser and share a PNG with clients for approval. No Zebra printer required to confirm the final output.

What is ZPL?

ZPL (Zebra Programming Language) is a page description language developed by Zebra Technologies. It's used to control Zebra thermal printers and create labels with text, barcodes, graphics, and other elements.

ZPL commands are sent directly to the printer as plain text. Each command starts with a caret (^) or tilde (~) character. This free tool lets you preview how your ZPL code will look when printed, without needing a physical printer.

Use this tool to test label designs, debug ZPL commands, or learn ZPL syntax before sending commands to your printer.

Common ZPL II Commands Reference

Quick reference for the most commonly used ZPL II commands

Command	Example	Description
^XA	^XA	Start of label format
^XZ	^XZ	End of label format
^FO	^FO50,100	Field origin (sets X,Y position in dots)
^LH	^LH0,0	Label home — sets origin offset for all fields
^A0	^A0N,30,30	Font selection (rotation, height, width)
^FD	^FDHello^FS	Field data (text or barcode content)
^FS	^FS	Field separator (ends a field)
^BY	^BY2,3,100	Bar code field defaults (width, ratio, height)
^BC	^BCN,100,Y,N	Code 128 barcode
^BQ	^BQN,2,5	QR Code barcode
^B3	^B3N,,60,Y	Code 39 barcode
^BE	^BEN,100,Y	EAN-13 barcode
^GB	^GB300,3,3	Graphic box (rectangle or line)
^GC	^GC50,2,B	Graphic circle
^GF	^GFA,...	Graphic field — embed a 1-bit image (hex data)
^PQ	^PQ1	Print quantity

Frequently Asked Questions

Related Resources

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