Does this upload my label data anywhere?

No. Decoding and rendering both happen locally in your browser, the same way the ZPL Viewer tool works.

What ZPL commands are supported in the preview?

The same subset as the ZPL Viewer tool: text fields, boxes/lines, and Code 128 barcodes. Other barcode types show as a placeholder, and other unsupported commands are listed under the preview.

Base64 to ZPL

Runs locally

Paste Base64-encoded ZPL (Zebra Programming Language) to decode it back into readable ZPL source, see the label rendered automatically, and download it as ZPL text, PNG, or PDF.

Base64-encoded ZPL

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Your data is processed locally in your browser and is not uploaded.

Learn more about this tool⌄

How it works

The Base64 is decoded to text locally, then rendered using the same parser and canvas renderer as the ZPL Viewer tool. Nothing is uploaded to a server.

Common use cases

Recovering a ZPL label from a Base64 string stored in a database or API payload
Previewing a Base64-encoded shipping label before sending it to a printer
Debugging a label-generation pipeline that produces Base64-encoded ZPL

Frequently asked questions

Does this upload my label data anywhere?: No. Decoding and rendering both happen locally in your browser, the same way the ZPL Viewer tool works.
What ZPL commands are supported in the preview?: The same subset as the ZPL Viewer tool: text fields, boxes/lines, and Code 128 barcodes. Other barcode types show as a placeholder, and other unsupported commands are listed under the preview.