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DockLabel

GS1-128 and SSCC shipping labels, straight to ZPL

DockLabel is a free generator for 4 x 6 inch GS1 logistic labels. Type in a shipment or paste a packing list, and get ZPL you can send to a ZPL thermal printer at 203 or 300 dpi.

Open the label generatorSee the ZPL it produces

It runs in your browser. Addresses, PO numbers and SSCCs are never uploaded, and the preview is drawn on your device, not by a rendering service. The only thing you type here that reaches a server is your email address, and only if you join the waitlist below. If you allow analytics, page views and button presses are counted, never what you typed. See the privacy policy.

Example 4 by 6 inch GS1 logistic label with ship from, ship to, carrier, PO number, carton count and an SSCC barcodeFROMNorthwind Supply Co1200 Industrial PkwyReno, NV 89502TOContoso Retail DC 148800 Distribution WayDenver, CO 80202CARRIERExample FreightCARTON1 OF 12PO NUMBERPO-4471902SSCC006141410000000012(00) 006141410000000012
An example label, drawn by the same code that writes the ZPL.

What it gets right, so the label scans

The SSCC and its check digit

Built from your GS1 Company Prefix and a serial number, with the mod 10 check digit calculated for you and verified on anything you paste in.

Check a number

No repeated numbers in a batch

Sequential serials for every label, an error if the range would overflow, and every CSV row compared against the rest for a duplicate SSCC.

What a duplicate costs

A barcode at a size GS1 allows

FNC1 after the start character, bars 4 dots wide at 203 dpi or 6 at 300 dpi, quiet zones on both sides, and the number in parentheses underneath.

The GS1-128 rules

Tell me when batch runs and SSCC serial tracking launch

Next up: saved batch runs from a packing list, and a serial ledger that remembers the last SSCC you used so a number is never repeated. Leave an email address and we will write once, when they are ready.

Only this email address is sent to our server, and only when you press the button. Nothing from the label generator goes with it.

Guides, tools and reference