Free ZPL tools

Every tool runs in the browser, needs no account and no card, and uses the same engine as the API. Anonymous output carries a small FREE PREVIEW watermark; a free account removes it and comes with an API key.

Converters

PDF → ZPL

Drop a shipping-label PDF, get print-ready ZPL per page with a pixel-true preview.

Image → ZPL

PNG, GIF or JPEG in; dithered, sized and packed into a ZPL graphic field.

HTML → ZPL

Design labels in HTML/CSS with native barcode elements; no ZPL knowledge needed.

Design

Label builder

Drag text, barcodes and shapes onto a label; get the ZPL and the API call. No ZPL by hand.

Stamper

Drag a logo into place on the label and get the API call that stamps every print.

Inspect & verify

ZPL → PNG

Render any ZPL at exact size and density: what you see is what the printhead does.

Preflight

Grade every barcode before it prints: decode, module width, quiet zones, blur margin.

Label sizer

Measure your ZPL's content bounds and see which standard label sizes it fits on.

~HS decoder

Paste your printer's ~HS response and get every status field decoded, faults highlighted.

Fix & protect

Unicode fixer

Arabic, Cyrillic or CJK printing as garbage? Shaped and rasterized in place; ASCII stays native.

Void label

Stamp a big diagonal VOID - DO NOT MAIL across dev and test labels, USPS style.

Config builder

Copies, darkness, print speed, tear-off: pick the settings and get your ZPL back with the right commands in the right place.

Need it in your own code?

Every tool here is one API call, with SDKs for PHP, Python, C#, Java and Go, and hosted virtual printers you can print to from your tests.

API docs